ipvs: Annotate init functions with __init

Being able to discard these functions saves a couple of bytes at runtime. The
cleanup functions can't be annotated with __exit as they are also called from
init functions.

Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
Acked-by: Simon Horman <horms@verge.net.au>
diff --git a/net/ipv4/ipvs/ip_vs_app.c b/net/ipv4/ipvs/ip_vs_app.c
index 1f1897a..201b8ea 100644
--- a/net/ipv4/ipvs/ip_vs_app.c
+++ b/net/ipv4/ipvs/ip_vs_app.c
@@ -608,7 +608,7 @@
 }
 
 
-int ip_vs_app_init(void)
+int __init ip_vs_app_init(void)
 {
 	/* we will replace it with proc_net_ipvs_create() soon */
 	proc_net_fops_create(&init_net, "ip_vs_app", 0, &ip_vs_app_fops);