[PULL 3/4] xen-block: Use one Error * variable instead of two

[Markus Armbruster]

While there, tidy up indentation, and add return just for consistency
and robustness.

Signed-off-by: Markus Armbruster <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: Peter Maydell <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
---
 hw/block/xen-block.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 3885464513..07bb32e22b 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -998,29 +998,27 @@ static void xen_block_device_destroy(XenBackendInstance 
*backend,
     XenBlockVdev *vdev = &blockdev->props.vdev;
     XenBlockDrive *drive = blockdev->drive;
     XenBlockIOThread *iothread = blockdev->iothread;
+    Error *local_err = NULL;
 
     trace_xen_block_device_destroy(vdev->number);
 
     object_unparent(OBJECT(xendev));
 
     if (iothread) {
-        Error *local_err = NULL;
-
         xen_block_iothread_destroy(iothread, &local_err);
         if (local_err) {
             error_propagate_prepend(errp, local_err,
-                                "failed to destroy iothread: ");
+                                    "failed to destroy iothread: ");
             return;
         }
     }
 
     if (drive) {
-        Error *local_err = NULL;
-
         xen_block_drive_destroy(drive, &local_err);
         if (local_err) {
             error_propagate_prepend(errp, local_err,
-                                "failed to destroy drive: ");
+                                    "failed to destroy drive: ");
+            return;
         }
     }
 }
-- 
2.21.1