drivers/net: use vzalloc()

Use vzalloc() and vzalloc_node() in net drivers

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/pptp.c b/drivers/net/pptp.c
index ccbc913..7556a92 100644
--- a/drivers/net/pptp.c
+++ b/drivers/net/pptp.c
@@ -673,8 +673,7 @@
 	int err = 0;
 	pr_info("PPTP driver version " PPTP_DRIVER_VERSION "\n");
 
-	callid_sock = __vmalloc((MAX_CALLID + 1) * sizeof(void *),
-		GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
+	callid_sock = vzalloc((MAX_CALLID + 1) * sizeof(void *));
 	if (!callid_sock) {
 		pr_err("PPTP: cann't allocate memory\n");
 		return -ENOMEM;