diff --git a/drivers/staging/rtl8723au/core/rtw_mlme.c b/drivers/staging/rtl8723au/core/rtw_mlme.c
index 62894702be290c26c9fd9b16ee0fbb99759ebe99..7b6a5a9dc9b4c22ebddb3d35882cda802e7d7e4d 100644
--- a/drivers/staging/rtl8723au/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723au/core/rtw_mlme.c
@@ -218,8 +218,6 @@ void rtw_generate_random_ibss23a(u8 *pibss)
 	pibss[3] = curtime & 0xff;/* p[0]; */
 	pibss[4] = (curtime >> 8) & 0xff;/* p[1]; */
 	pibss[5] = (curtime >> 16) & 0xff;/* p[2]; */
-
-	return;
 }
 
 void rtw_set_roaming(struct rtw_adapter *adapter, u8 to_roaming)
@@ -579,8 +577,6 @@ void rtw_atimdone_event_callback23a(struct rtw_adapter *adapter, const u8 *pbuf)
 {
 	RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_,
 		 ("receive atimdone_evet\n"));
-
-	return;
 }
 
 void rtw_survey_event_cb23a(struct rtw_adapter *adapter, const u8 *pbuf)
@@ -650,8 +646,6 @@ void rtw_survey_event_cb23a(struct rtw_adapter *adapter, const u8 *pbuf)
 
 	kfree(survey->bss);
 	survey->bss = NULL;
-
-	return;
 }
 
 void