netns: build fix for net_alloc_generic

net_alloc_generic was defined in #ifdef CONFIG_NET_NS, but used
unconditionally. Move net_alloc_generic out of #ifdef.

Signed-off-by: Clemens Noss <cnoss@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index b0767ab..2adb1a7 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -63,10 +63,6 @@
 	goto out;
 }
 
-#ifdef CONFIG_NET_NS
-static struct kmem_cache *net_cachep;
-static struct workqueue_struct *netns_wq;
-
 static struct net_generic *net_alloc_generic(void)
 {
 	struct net_generic *ng;
@@ -80,6 +76,10 @@
 	return ng;
 }
 
+#ifdef CONFIG_NET_NS
+static struct kmem_cache *net_cachep;
+static struct workqueue_struct *netns_wq;
+
 static struct net *net_alloc(void)
 {
 	struct net *net = NULL;