drm: remove hash tables on drm exit

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index 654b95c..b366c5b 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -161,6 +161,7 @@
 			drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
 			drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
 		}
+		drm_ht_remove(&dev->magiclist);
 	}
 
 	/* Clear AGP information */
@@ -299,6 +300,7 @@
 	if (dev->maplist) {
 		drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
 		dev->maplist = NULL;
+		drm_ht_remove(&dev->map_hash);
 	}
 
 	drm_ctxbitmap_cleanup(dev);