net: hns: fix hns dsaf v1 dont support tx_pause close

For service port, hns dsaf v1 support to close tx_pause.
However, the port will be invalid when it run command
ethtool to close tx_pause. This patch will fix it.
Signed-off-by: NQianqian Xie <xieqiaqian@huawei.com>
Signed-off-by: NYisen Zhuang <Yisen.Zhuang@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c

@@ -1114,10 +1114,10 @@ int hns_dsaf_set_rx_mac_pause_en(struct dsaf_device *dsaf_dev, int mac_id,
 				 u32 en)
 {
 	if (AE_IS_VER1(dsaf_dev->dsaf_ver)) {
-		if (!en)
+		if (!en) {
 			dev_err(dsaf_dev->dev, "dsafv1 can't close rx_pause!\n");
-
-		return -EINVAL;
+			return -EINVAL;
+		}
 	}
 
 	dsaf_set_dev_bit(dsaf_dev, DSAF_PAUSE_CFG_REG + mac_id * 4,