[PATCH -next] net: stmmac: Fix an error code in dwmac-ingenic.c

[Yang Li]

When IS_ERR(mac->regmap) returns true, the value of ret is 0.
So, we set ret to -ENODEV to indicate this error.

Clean up smatch warning:
drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c:266
ingenic_mac_probe() warn: missing error code 'ret'

Reported-by: Abaci Robot <abaci at linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee at linux.alibaba.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c
index 60984c1..f3950e0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-ingenic.c
@@ -263,6 +263,7 @@ static int ingenic_mac_probe(struct platform_device *pdev)
 	mac->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, "mode-reg");
 	if (IS_ERR(mac->regmap)) {
 		dev_err(&pdev->dev, "%s: Failed to get syscon regmap\n", __func__);
+		ret = -ENODEV;
 		goto err_remove_config_dt;
 	}
 
-- 
1.8.3.1