md/raid10: submit_bio_wait() returns 0 on success

commit 681ab469 upstream.

This was introduced with 9e882242
which changed the return value of submit_bio_wait() to return != 0 on
error, but didn't update the caller accordingly.

Fixes: 9e882242 ("block: Add submit_bio_wait(), remove from md")
Reported-by: Bill Kuzeja <William.Kuzeja@stratus.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/md/raid10.c

@@ -2604,7 +2604,7 @@ static int narrow_write_error(struct r10bio *r10_bio, int i)
 				   choose_data_offset(r10_bio, rdev) +
 				   (sector - r10_bio->sector));
 		wbio->bi_bdev = rdev->bdev;
-		if (submit_bio_wait(WRITE, wbio) == 0)
+		if (submit_bio_wait(WRITE, wbio) < 0)
 			/* Failure! */
 			ok = rdev_set_badblocks(rdev, sector,
 						sectors, 0)