btrfs: remove duplicate recording of physical address

Remove the duplicate physical recording of the original write physical
address in case of a single device write.

This duplicated code is most likely present due to a rebase error.

Reviewed-by: Filipe Manana <[e-mail]>
Signed-off-by: Johannes Thumshirn <[e-mail]>
Reviewed-by: David Sterba <[e-mail]>
Signed-off-by: David Sterba <[e-mail]>

fs/btrfs/bio.c

···
 	if (!bioc) {
 		/* Single mirror read/write fast path. */
 		btrfs_bio(bio)->mirror_num = mirror_num;
-		if (bio_op(bio) != REQ_OP_READ)
-			btrfs_bio(bio)->orig_physical = smap->physical;
 		bio->bi_iter.bi_sector = smap->physical >> SECTOR_SHIFT;
 		if (bio_op(bio) != REQ_OP_READ)
 			btrfs_bio(bio)->orig_physical = smap->physical;