diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index 79895aec281eb5ad198fae3e5e8aed31849ed900..216fee014b32bf206c6e3ab767bbafc5c0c6a580 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -261,8 +261,6 @@ void rq_attach_root(struct rq *rq, struct root_domain *rd)
 
 static int init_rootdomain(struct root_domain *rd)
 {
-	memset(rd, 0, sizeof(*rd));
-
 	if (!zalloc_cpumask_var(&rd->span, GFP_KERNEL))
 		goto out;
 	if (!zalloc_cpumask_var(&rd->online, GFP_KERNEL))
@@ -311,7 +309,7 @@ static struct root_domain *alloc_rootdomain(void)
 {
 	struct root_domain *rd;
 
-	rd = kmalloc(sizeof(*rd), GFP_KERNEL);
+	rd = kzalloc(sizeof(*rd), GFP_KERNEL);
 	if (!rd)
 		return NULL;