staging: rtl8723au: Fixes unnecessary return warning

This patch fixes checkpatch.pl warning in rtw_mlme_ext.c file.
WARNING: void function return statements are not generally useful
Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/core/rtw_mlme_ext.c

@@ -2656,8 +2656,6 @@ static void issue_probersp(struct rtw_adapter *padapter, unsigned char *da)
 	pattrib->last_txcmdsz = pattrib->pktlen;
 
 	dump_mgntframe23a(padapter, pmgntframe);
-
-	return;
 }
 
 static int _issue_probereq(struct rtw_adapter *padapter,
@@ -2957,8 +2955,6 @@ static void issue_auth(struct rtw_adapter *padapter, struct sta_info *psta,
 	rtw_wep_encrypt23a(padapter, pmgntframe);
 	DBG_8723A("%s\n", __func__);
 	dump_mgntframe23a(padapter, pmgntframe);
-
-	return;
 }
 
 #ifdef CONFIG_8723AU_AP_MODE
@@ -3338,8 +3334,6 @@ static void issue_assocreq(struct rtw_adapter *padapter)
 		}
 	} else
 		kfree(pmlmepriv->assoc_req);
-
-	return;
 }
 
 /* when wait_ack is true, this function should be called at process context */
@@ -4102,8 +4096,6 @@ static void rtw_site_survey(struct rtw_adapter *padapter)
 		pmlmeext->chan_scan_time = SURVEY_TO;
 		pmlmeext->sitesurvey_res.state = SCAN_DISABLE;
 	}
-
-	return;
 }
 
 /* collect bss info from Beacon and Probe request/response frames. */
@@ -4759,8 +4751,6 @@ void report_survey_event23a(struct rtw_adapter *padapter,
 	rtw_enqueue_cmd23a(pcmdpriv, pcmd_obj);
 
 	pmlmeext->sitesurvey_res.bss_cnt++;
-
-	return;
 }
 
 void report_surveydone_event23a(struct rtw_adapter *padapter)
@@ -4802,8 +4792,6 @@ void report_surveydone_event23a(struct rtw_adapter *padapter)
 	DBG_8723A("survey done event(%x)\n", psurveydone_evt->bss_cnt);
 
 	rtw_enqueue_cmd23a(pcmdpriv, pcmd_obj);
-
-	return;
 }
 
 void report_join_res23a(struct rtw_adapter *padapter, int res)
@@ -4850,8 +4838,6 @@ void report_join_res23a(struct rtw_adapter *padapter, int res)
 	rtw_joinbss_event_prehandle23a(padapter, (u8 *)&pjoinbss_evt->network);
 
 	rtw_enqueue_cmd23a(pcmdpriv, pcmd_obj);
-
-	return;
 }
 
 void report_del_sta_event23a(struct rtw_adapter *padapter,
@@ -4906,8 +4892,6 @@ void report_del_sta_event23a(struct rtw_adapter *padapter,
 	DBG_8723A("report_del_sta_event23a: delete STA, mac_id =%d\n", mac_id);
 
 	rtw_enqueue_cmd23a(pcmdpriv, pcmd_obj);
-
-	return;
 }
 
 void report_add_sta_event23a(struct rtw_adapter *padapter,
@@ -4951,8 +4935,6 @@ void report_add_sta_event23a(struct rtw_adapter *padapter,
 	DBG_8723A("report_add_sta_event23a: add STA\n");
 
 	rtw_enqueue_cmd23a(pcmdpriv, pcmd_obj);
-
-	return;
 }
 
 /****************************************************************************
@@ -5394,8 +5376,6 @@ static void link_timer_hdl(unsigned long data)
 		issue_assocreq(padapter);
 		set_link_timer(pmlmeext, REASSOC_TO);
 	}
-
-	return;
 }
 
 static void addba_timer_hdl(unsigned long data)