block/backup: drop extra gotos from backup_run()

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-17-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>

block/backup.c

@@ -236,7 +236,7 @@ static void backup_init_bcs_bitmap(BackupBlockJob *job)
 static int coroutine_fn backup_run(Job *job, Error **errp)
 {
     BackupBlockJob *s = container_of(job, BackupBlockJob, common.job);
-    int ret = 0;
+    int ret;
 
     backup_init_bcs_bitmap(s);
 
@@ -246,13 +246,12 @@ static int coroutine_fn backup_run(Job *job, Error **errp)
 
         for (offset = 0; offset < s->len; ) {
             if (yield_and_check(s)) {
-                ret = -ECANCELED;
-                goto out;
+                return -ECANCELED;
             }
 
             ret = block_copy_reset_unallocated(s->bcs, offset, &count);
             if (ret < 0) {
-                goto out;
+                return ret;
             }
 
             offset += count;
@@ -273,11 +272,10 @@ static int coroutine_fn backup_run(Job *job, Error **errp)
             job_yield(job);
         }
     } else {
-        ret = backup_loop(s);
+        return backup_loop(s);
     }
 
- out:
-    return ret;
+    return 0;
 }
 
 static const BlockJobDriver backup_job_driver = {