staging: rtl8723bs: core: Remove return variables in rtw_mlme_ext.c

Remove unnecessary local return variables in rtw_mlme_ext.c. Issue found
with Coccinelle using ret.cocci.
Signed-off-by: Nishka Dasgupta <nishka.dasgupta@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/core/rtw_mlme_ext.c

@@ -3569,7 +3569,6 @@ int issue_nulldata(struct adapter *padapter, unsigned char *da, unsigned int pow
  */
 s32 issue_nulldata_in_interrupt(struct adapter *padapter, u8 *da)
 {
-	int ret;
 	struct mlme_ext_priv *pmlmeext;
 	struct mlme_ext_info *pmlmeinfo;
 
@@ -3581,9 +3580,7 @@ s32 issue_nulldata_in_interrupt(struct adapter *padapter, u8 *da)
 	if (!da)
 		da = get_my_bssid(&(pmlmeinfo->network));
 
-	ret = _issue_nulldata(padapter, da, 0, false);
-
-	return ret;
+	return _issue_nulldata(padapter, da, 0, false);
 }
 
 /* when wait_ack is ture, this function shoule be called at process context */