RDS: remove __init and __exit annotation

The trivial amount of memory saved isn't worth the cost of dealing with section
mismatches.

Signed-off-by: Zach Brown <zach.brown@oracle.com>
diff --git a/net/rds/iw.c b/net/rds/iw.c
index 467790d..56808ca 100644
--- a/net/rds/iw.c
+++ b/net/rds/iw.c
@@ -287,7 +287,7 @@
 	.t_prefer_loopback	= 1,
 };
 
-int __init rds_iw_init(void)
+int rds_iw_init(void)
 {
 	int ret;