net: two vzalloc() cleanups

We can use vzalloc() helper now instead of __vmalloc() trick
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/nf_conntrack_core.c

@@ -1342,8 +1342,7 @@ void *nf_ct_alloc_hashtable(unsigned int *sizep, int nulls)
 					get_order(sz));
 	if (!hash) {
 		printk(KERN_WARNING "nf_conntrack: falling back to vmalloc.\n");
-		hash = __vmalloc(sz, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
-				 PAGE_KERNEL);
+		hash = vzalloc(sz);
 	}
 
 	if (hash && nulls)

net/tipc/ref.c

@@ -110,8 +110,7 @@ int tipc_ref_table_init(u32 requested_size, u32 start)
 
 	/* allocate table & mark all entries as uninitialized */
 
-	table = __vmalloc(actual_size * sizeof(struct reference),
-			  GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL);
+	table = vzalloc(actual_size * sizeof(struct reference));
 	if (table == NULL)
 		return -ENOMEM;