mac80211 rate control: fix section mismatch

When the rate control algorithms are built-in, their exit
functions can be called from mac80211's init function so
they cannot be marked __exit.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/rc80211_simple.c b/net/mac80211/rc80211_simple.c
index 934676d..9a78b11 100644
--- a/net/mac80211/rc80211_simple.c
+++ b/net/mac80211/rc80211_simple.c
@@ -389,7 +389,7 @@
 	return ieee80211_rate_control_register(&mac80211_rcsimple);
 }
 
-void __exit rc80211_simple_exit(void)
+void rc80211_simple_exit(void)
 {
 	ieee80211_rate_control_unregister(&mac80211_rcsimple);
 }