AFS: Fix lock imbalance

Don't unlock on vfs_rejected_lock path in afs_do_setlk, since the lock
is unlocked after abort_attempt label.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

fs/afs/flock.c

@@ -432,7 +432,6 @@ static int afs_do_setlk(struct file *file, struct file_lock *fl)
 	list_del_init(&fl->fl_u.afs.link);
 	if (list_empty(&vnode->granted_locks))
 		afs_defer_unlock(vnode, key);
-	spin_unlock(&vnode->lock);
 	goto abort_attempt;
 }