error: Eliminate error_propagate() manually

When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away.  The previous two commits did that for sufficiently simple
cases with Coccinelle.  Do it for several more manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-37-armbru@redhat.com>

3 files changed, 7 insertions, 15 deletions

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 24de4edfc6..92146a2119 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -743,7 +743,6 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
     BusState *bus;
     PCIHostState *phb = PCI_HOST_BRIDGE(dev);
     S390pciState *s = S390_PCI_HOST_BRIDGE(dev);
-    Error *local_err = NULL;
 
     DPRINTF("host_init\n");
 
@@ -767,8 +766,7 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
     QTAILQ_INIT(&s->zpci_devs);
 
     css_register_io_adapters(CSS_IO_ADAPTER_PCI, true, false,
-                             S390_ADAPTER_SUPPRESSIBLE, &local_err);
-    error_propagate(errp, local_err);
+                             S390_ADAPTER_SUPPRESSIBLE, errp);
 }
 
 static int s390_pci_msix_init(S390PCIBusDevice *pbdev)
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index 20e8e95c61..8cc2f25d8a 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -68,20 +68,18 @@ static S390CPU *s390x_new_cpu(const char *typename, uint32_t core_id,
                               Error **errp)
 {
     S390CPU *cpu = S390_CPU(object_new(typename));
-    Error *err = NULL;
     S390CPU *ret = NULL;
 
-    if (!object_property_set_int(OBJECT(cpu), "core-id", core_id, &err)) {
+    if (!object_property_set_int(OBJECT(cpu), "core-id", core_id, errp)) {
         goto out;
     }
-    if (!qdev_realize(DEVICE(cpu), NULL, &err)) {
+    if (!qdev_realize(DEVICE(cpu), NULL, errp)) {
         goto out;
     }
     ret = cpu;
 
 out:
     object_unref(OBJECT(cpu));
-    error_propagate(errp, err);
     return ret;
 }
 
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 03364343eb..a0ce444b4b 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -329,7 +329,6 @@ static void sclp_realize(DeviceState *dev, Error **errp)
 {
     MachineState *machine = MACHINE(qdev_get_machine());
     SCLPDevice *sclp = SCLP(dev);
-    Error *err = NULL;
     uint64_t hw_limit;
     int ret;
 
@@ -338,20 +337,17 @@ static void sclp_realize(DeviceState *dev, Error **errp)
      * as we can't find a fitting bus via the qom tree, we have to add the
      * event facility to the sysbus, so e.g. a sclp console can be created.
      */
-    if (!sysbus_realize(SYS_BUS_DEVICE(sclp->event_facility), &err)) {
-        goto out;
+    if (!sysbus_realize(SYS_BUS_DEVICE(sclp->event_facility), errp)) {
+        return;
     }
 
     ret = s390_set_memory_limit(machine->maxram_size, &hw_limit);
     if (ret == -E2BIG) {
-        error_setg(&err, "host supports a maximum of %" PRIu64 " GB",
+        error_setg(errp, "host supports a maximum of %" PRIu64 " GB",
                    hw_limit / GiB);
     } else if (ret) {
-        error_setg(&err, "setting the guest size failed");
+        error_setg(errp, "setting the guest size failed");
     }
-
-out:
-    error_propagate(errp, err);
 }
 
 static void sclp_memory_init(SCLPDevice *sclp)