dm: set QUEUE_FLAG_DAX accordingly in dm_table_set_restrictions()

Rather than having DAX support be unique by setting it based on table
type in dm_setup_md_queue().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>

drivers/md/dm-table.c

@@ -1823,6 +1823,8 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
 	}
 	blk_queue_write_cache(q, wc, fua);
 
+	if (dm_table_supports_dax(t))
+		queue_flag_set_unlocked(QUEUE_FLAG_DAX, q);
 	if (dm_table_supports_dax_write_cache(t))
 		dax_write_cache(t->md->dax_dev, true);
 

drivers/md/dm.c

@@ -2034,9 +2034,6 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t)
 	case DM_TYPE_DAX_BIO_BASED:
 		dm_init_normal_md_queue(md);
 		blk_queue_make_request(md->queue, dm_make_request);
-
-		if (type == DM_TYPE_DAX_BIO_BASED)
-			queue_flag_set_unlocked(QUEUE_FLAG_DAX, md->queue);
 		break;
 	case DM_TYPE_NONE:
 		WARN_ON_ONCE(true);