rxrpc: Fix error handling in af_rxrpc_init()

security initialized after alloc workqueue, so we should exit security
before destroy workqueue in the error handing.

Fixes: 648af7fc ("rxrpc: Absorb the rxkad security module")
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/rxrpc/af_rxrpc.c

@@ -766,9 +766,9 @@ static int __init af_rxrpc_init(void)
 error_sock:
 	proto_unregister(&rxrpc_proto);
 error_proto:
-	destroy_workqueue(rxrpc_workqueue);
-error_security:
 	rxrpc_exit_security();
+error_security:
+	destroy_workqueue(rxrpc_workqueue);
 error_work_queue:
 	kmem_cache_destroy(rxrpc_call_jar);
 error_call_jar: