qemu: Return in from qemuDomainRemove*Device

Some of the APIs already return int since they can produce errors that
need to be propagated. For consistency reasons, this patch changes the
rest of the APIs to also return int even though they do not fail or
report any errors.

src/qemu/qemu_hotplug.c

@@ -2523,7 +2523,7 @@ qemuDomainRemoveDiskDevice(virQEMUDriverPtr driver,
 }
 
 
-static void
+static int
 qemuDomainRemoveControllerDevice(virQEMUDriverPtr driver,
                                  virDomainObjPtr vm,
                                  virDomainControllerDefPtr controller)
@@ -2547,6 +2547,7 @@ qemuDomainRemoveControllerDevice(virQEMUDriverPtr driver,
 
     qemuDomainReleaseDeviceAddress(vm, &controller->info, NULL);
     virDomainControllerDefFree(controller);
+    return 0;
 }
 
 
@@ -2575,7 +2576,7 @@ qemuDomainRemoveSCSIHostDevice(virQEMUDriverPtr driver,
     qemuDomainReAttachHostSCSIDevices(driver, vm->def->name, &hostdev, 1);
 }
 
-static void
+static int
 qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
                            virDomainObjPtr vm,
                            virDomainHostdevDefPtr hostdev)
@@ -2641,6 +2642,7 @@ qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
         virDomainNetDefFree(net);
     }
     virObjectUnref(cfg);
+    return 0;
 }
 
 
@@ -2659,8 +2661,8 @@ qemuDomainRemoveNetDevice(virQEMUDriverPtr driver,
 
     if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
         /* this function handles all hostdev and netdev cleanup */
-        qemuDomainRemoveHostDevice(driver, vm, virDomainNetGetActualHostdev(net));
-        ret = 0;
+        ret = qemuDomainRemoveHostDevice(driver, vm,
+                                         virDomainNetGetActualHostdev(net));
         goto cleanup;
     }
 
@@ -3189,9 +3191,9 @@ int qemuDomainDetachControllerDevice(virQEMUDriverPtr driver,
 
     rc = qemuDomainWaitForDeviceRemoval(vm);
     if (rc == 0 || rc == 1)
-        qemuDomainRemoveControllerDevice(driver, vm, detach);
-
-    ret = 0;
+        ret = qemuDomainRemoveControllerDevice(driver, vm, detach);
+    else
+        ret = 0;
 
  cleanup:
     qemuDomainResetDeviceRemoval(vm);
@@ -3345,7 +3347,7 @@ qemuDomainDetachThisHostDevice(virQEMUDriverPtr driver,
     } else {
         int rc = qemuDomainWaitForDeviceRemoval(vm);
         if (rc == 0 || rc == 1)
-            qemuDomainRemoveHostDevice(driver, vm, detach);
+            ret = qemuDomainRemoveHostDevice(driver, vm, detach);
     }
 
     qemuDomainResetDeviceRemoval(vm);