diff --git a/net/sched/ematch.c b/net/sched/ematch.c
index d421ec728ee7e795b3ddb3795859242dd5fa5b2b..b29439ddcf717053923a38b610a8ee89cac17744 100644
--- a/net/sched/ematch.c
+++ b/net/sched/ematch.c
@@ -409,14 +409,15 @@ void tcf_em_tree_destroy(struct tcf_proto *tp, struct tcf_ematch_tree *tree)
 		if (em->ops) {
 			if (em->ops->destroy)
 				em->ops->destroy(tp, em);
-			else if (!tcf_em_is_simple(em) && em->data)
-				kfree((void *) em->data);
+			else if (!tcf_em_is_simple(em))
+				kfree(em->data);
 			module_put(em->ops->owner);
 		}
 	}
 
 	tree->hdr.nmatches = 0;
 	kfree(tree->matches);
+	tree->matches = NULL;
 }
 EXPORT_SYMBOL(tcf_em_tree_destroy);