nvme: remove superfluous bio_set_dev in nvme_requeue_work

Commit ce86dad2 ("nvme-multipath: reset bdev to ns head when
failover") moved the reset code where the bio is added to the
requeue_list for the failover path. But it left the original
bio_set_dev in nvme_requeue_work.

There is a second path to nvme_requee_work. It is via
nvme_ns_head_submit_bio. Though we don't have to set bio->bi_bdev for
this path either, as it points to the correct bdev already.

Let's remove the bio_set_dev. It's updating the bio->bi_bdev with the
same pointer and thus it's unnecessary.
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/nvme/host/multipath.c

@@ -435,11 +435,6 @@ static void nvme_requeue_work(struct work_struct *work)
 		next = bio->bi_next;
 		bio->bi_next = NULL;
 
-		/*
-		 * Reset disk to the mpath node and resubmit to select a new
-		 * path.
-		 */
-		bio_set_dev(bio, head->disk->part0);
 		submit_bio_noacct(bio);
 	}
 }