llc2: Call llc_station_exit() on llc2_init() failure path

Otherwise the station packet handler will remain registered even though
the module is unloaded.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/llc/af_llc.c

@@ -1206,7 +1206,7 @@ static int __init llc2_init(void)
 	rc = llc_proc_init();
 	if (rc != 0) {
 		printk(llc_proc_err_msg);
-		goto out_unregister_llc_proto;
+		goto out_station;
 	}
 	rc = llc_sysctl_init();
 	if (rc) {
@@ -1226,7 +1226,8 @@ out_sysctl:
 	llc_sysctl_exit();
 out_proc:
 	llc_proc_exit();
-out_unregister_llc_proto:
+out_station:
+	llc_station_exit();
 	proto_unregister(&llc_proto);
 	goto out;
 }

net/llc/llc_station.c

@@ -701,7 +701,7 @@ void __init llc_station_init(void)
 	llc_main_station.state		= LLC_STATION_STATE_UP;
 }
 
-void __exit llc_station_exit(void)
+void llc_station_exit(void)
 {
 	llc_set_station_handler(NULL);
 }