cipso: add __init to cipso_v4_cache_init

cipso_v4_cache_init is only called by __init cipso_v4_init

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/cipso_ipv4.c

diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 05b708bb..4715f25 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -246,7 +246,7 @@
  * success, negative values on error.
  *
  */
-static int cipso_v4_cache_init(void)
+static int __init cipso_v4_cache_init(void)
 {
 	u32 iter;