net: stmmac: remove redundant dev_err call in qcom_ethqos_probe()

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NGuobin Huang <huangguobin4@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c

@@ -477,7 +477,6 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rgmii");
 	ethqos->rgmii_base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(ethqos->rgmii_base)) {
-		dev_err(&pdev->dev, "Can't get rgmii base\n");
 		ret = PTR_ERR(ethqos->rgmii_base);
 		goto err_mem;
 	}