Staging: rtl8723au: Remove return in void function

WARNING: void function return statements are not generally useful
Remove return in void function. That was found by running checkpatch.
Signed-off-by: Melike Yurtoglu <aysemelikeyurtoglu@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/hal_com.c

@@ -236,8 +236,6 @@ void HalSetBrateCfg23a(struct rtw_adapter *padapter, u8 *mBratesOS)
 	}
 		/*  Ziv - Check */
 	rtl8723au_write8(padapter, REG_INIRTS_RATE_SEL, rate_index);
-
-	return;
 }
 
 static void _OneOutPipeMapping(struct rtw_adapter *pAdapter)