ipvs: Consistently use array_size() in ip_vs_conn_init()

Consistently use array_size() to calculate the size of ip_vs_conn_tab
in bytes.

Flagged by Coccinelle:
 WARNING: array_size is already used (line 1498) to compute the same size

No functional change intended.
Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/netfilter/ipvs/ip_vs_conn.c

@@ -1481,6 +1481,7 @@ void __net_exit ip_vs_conn_net_cleanup(struct netns_ipvs *ipvs)
 
 int __init ip_vs_conn_init(void)
 {
+	size_t tab_array_size;
 	int idx;
 
 	/* Compute size and mask */
@@ -1494,8 +1495,9 @@ int __init ip_vs_conn_init(void)
 	/*
 	 * Allocate the connection hash table and initialize its list heads
 	 */
-	ip_vs_conn_tab = vmalloc(array_size(ip_vs_conn_tab_size,
-					    sizeof(*ip_vs_conn_tab)));
+	tab_array_size = array_size(ip_vs_conn_tab_size,
+				    sizeof(*ip_vs_conn_tab));
+	ip_vs_conn_tab = vmalloc(tab_array_size);
 	if (!ip_vs_conn_tab)
 		return -ENOMEM;
 
@@ -1508,10 +1510,8 @@ int __init ip_vs_conn_init(void)
 		return -ENOMEM;
 	}
 
-	pr_info("Connection hash table configured "
-		"(size=%d, memory=%ldKbytes)\n",
-		ip_vs_conn_tab_size,
-		(long)(ip_vs_conn_tab_size*sizeof(*ip_vs_conn_tab))/1024);
+	pr_info("Connection hash table configured (size=%d, memory=%zdKbytes)\n",
+		ip_vs_conn_tab_size, tab_array_size / 1024);
 	IP_VS_DBG(0, "Each connection entry needs %zd bytes at least\n",
 		  sizeof(struct ip_vs_conn));