net: spread __net_init, __net_exit

__net_init/__net_exit are apparently not going away, so use them
to full extent.

In some cases __net_init was removed, because it was called from
__net_exit code.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 926ce8e..ed31c37 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -1275,7 +1275,7 @@
 	.release =	seq_release_net,
 };
 
-static int raw6_init_net(struct net *net)
+static int __net_init raw6_init_net(struct net *net)
 {
 	if (!proc_net_fops_create(net, "raw6", S_IRUGO, &raw6_seq_fops))
 		return -ENOMEM;
@@ -1283,7 +1283,7 @@
 	return 0;
 }
 
-static void raw6_exit_net(struct net *net)
+static void __net_exit raw6_exit_net(struct net *net)
 {
 	proc_net_remove(net, "raw6");
 }