[NETFILTER]: Rename init functions.

Every netfilter module uses `init' for its module_init() function and
`fini' or `cleanup' for its module_exit() function.

Problem is, this creates uninformative initcall_debug output and makes
ctags rather useless.

So go through and rename them all to $(filename)_init and
$(filename)_fini.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/decnet/netfilter/dn_rtmsg.c b/net/decnet/netfilter/dn_rtmsg.c
index 16a5a31..74133ec 100644
--- a/net/decnet/netfilter/dn_rtmsg.c
+++ b/net/decnet/netfilter/dn_rtmsg.c
@@ -133,7 +133,7 @@
 	.priority	= NF_DN_PRI_DNRTMSG,
 };
 
-static int __init init(void)
+static int __init dn_rtmsg_init(void)
 {
 	int rv = 0;
 
@@ -152,7 +152,7 @@
 	return rv;
 }
 
-static void __exit fini(void)
+static void __exit dn_rtmsg_fini(void)
 {
 	nf_unregister_hook(&dnrmg_ops);
 	sock_release(dnrmg->sk_socket);
@@ -164,6 +164,6 @@
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NET_PF_PROTO(PF_NETLINK, NETLINK_DNRTMSG);
 
-module_init(init);
-module_exit(fini);
+module_init(dn_rtmsg_init);
+module_exit(dn_rtmsg_fini);