[PATCH net 6/7] net: hns: fix warning of passing zero to 'PTR_ERR'

[Yisen Zhuang]

From: Kejian Yan <yankej...@huawei.com>

There is a misuse of PTR as shown below:

        ae_node = (void *)of_parse_phandle(dev->of_node,
                                           "ae-handle",
                                           0);
        if (IS_ERR_OR_NULL(ae_node)) {
                ret = PTR_ERR(ae_node);
                dev_err(dev, "not find ae-handle\n");
                goto out_read_prop_fail;
        }

if the ae_node is NULL, PTR_ERR(ae_node) means it returns success. And the
return value should be -ENODEV.

Signed-off-by: Kejian Yan <yankej...@huawei.com>
Signed-off-by: Yisen Zhuang <yisen.zhu...@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns/hns_enet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c 
b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 66d1652..687204b 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -1814,7 +1814,7 @@ static int hns_nic_try_get_ae(struct net_device *ndev)
        h = hnae_get_handle(&priv->netdev->dev,
                            priv->ae_node, priv->port_id, NULL);
        if (IS_ERR_OR_NULL(h)) {
-               ret = PTR_ERR(h);
+               ret = -ENODEV;
                dev_dbg(priv->dev, "has not handle, register notifier!\n");
                goto out;
        }
-- 
1.9.1