md: remove obsolete ret in md_start_sync

The ret is not needed anymore since we have already
move resync_start into md_do_sync in commit 41a9a0d.
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>

drivers/md/md.c

@@ -8278,15 +8278,12 @@ static int remove_and_add_spares(struct mddev *mddev,
 static void md_start_sync(struct work_struct *ws)
 {
 	struct mddev *mddev = container_of(ws, struct mddev, del_work);
-	int ret = 0;
 
 	mddev->sync_thread = md_register_thread(md_do_sync,
 						mddev,
 						"resync");
 	if (!mddev->sync_thread) {
-		if (!(mddev_is_clustered(mddev) && ret == -EAGAIN))
-			printk(KERN_ERR "%s: could not start resync"
-			       " thread...\n",
+		printk(KERN_ERR "%s: could not start resync thread...\n",
 		       mdname(mddev));
 		/* leave the spares where they are, it shouldn't hurt */
 		clear_bit(MD_RECOVERY_SYNC, &mddev->recovery);