btrfs: Remove redundant bio_get/set from submit_dio_repair_bio

The bio that is passsed is the newly created repair bio which already
has a reference count of 1, which is going to be consumed by the
endio routine on successful submission. On error the handler also
calls bio_put.
Signed-off-by: NNikolay Borisov <nborisov@suse.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/inode.c

@@ -7941,15 +7941,12 @@ static inline blk_status_t submit_dio_repair_bio(struct inode *inode,
 
 	BUG_ON(bio_op(bio) == REQ_OP_WRITE);
 
-	bio_get(bio);
-
 	ret = btrfs_bio_wq_end_io(fs_info, bio, BTRFS_WQ_ENDIO_DIO_REPAIR);
 	if (ret)
-		goto err;
+		return ret;
 
 	ret = btrfs_map_bio(fs_info, bio, mirror_num, 0);
-err:
-	bio_put(bio);
+
 	return ret;
 }