staging: rtl8723bs: remove redundant result variable

Return value from ips_netdrv_open() directly instead
of taking this in another redundant variable.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Link: https://lore.kernel.org/r/20220110013240.644190-1-chi.minghao@zte.com.cnSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/os_dep/os_intfs.c

@@ -922,11 +922,7 @@ static int  ips_netdrv_open(struct adapter *padapter)
 
 int rtw_ips_pwr_up(struct adapter *padapter)
 {
-	int result;
-
-	result = ips_netdrv_open(padapter);
-
-	return result;
+	return ips_netdrv_open(padapter);
 }
 
 void rtw_ips_pwr_down(struct adapter *padapter)