netfilter: ipvs: Replace kzalloc with kcalloc.

Replace kzalloc with kcalloc. As kcalloc is preferred for allocating an
array instead of kzalloc. This patch fixes the checkpatch issue.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>

net/netfilter/ipvs/ip_vs_sync.c

@@ -1849,7 +1849,7 @@ int start_sync_thread(struct netns_ipvs *ipvs, struct ipvs_sync_daemon_cfg *c,
 	if (state == IP_VS_STATE_MASTER) {
 		struct ipvs_master_sync_state *ms;
 
-		ipvs->ms = kzalloc(count * sizeof(ipvs->ms[0]), GFP_KERNEL);
+		ipvs->ms = kcalloc(count, sizeof(ipvs->ms[0]), GFP_KERNEL);
 		if (!ipvs->ms)
 			goto out;
 		ms = ipvs->ms;
@@ -1862,7 +1862,7 @@ int start_sync_thread(struct netns_ipvs *ipvs, struct ipvs_sync_daemon_cfg *c,
 			ms->ipvs = ipvs;
 		}
 	} else {
-		array = kzalloc(count * sizeof(struct task_struct *),
+		array = kcalloc(count, sizeof(struct task_struct *),
 				GFP_KERNEL);
 		if (!array)
 			goto out;