dm: cleanup cleanup_mapped_device

md->queue is now always set when md->disk is set, so simplify the
conditionals a bit.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Link: https://lore.kernel.org/r/20210804094147.459763-6-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

drivers/md/dm.c

@@ -1694,13 +1694,9 @@ static void cleanup_mapped_device(struct mapped_device *md)
 		md->disk->private_data = NULL;
 		spin_unlock(&_minor_lock);
 		del_gendisk(md->disk);
-	}
-
-	if (md->queue)
 		dm_queue_destroy_keyslot_manager(md->queue);
-
-	if (md->disk)
 		blk_cleanup_disk(md->disk);
+	}
 
 	cleanup_srcu_struct(&md->io_barrier);