phy: bcm-ns-usb3: Remove redundant dev_err call in bcm_ns_usb3_mdio_probe()

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: He Ying <heying24@huawei.com>
Link: https://lore.kernel.org/r/20210408090808.247368-1-heying24@huawei.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/broadcom/phy-bcm-ns-usb3.c

@@ -215,10 +215,8 @@ static int bcm_ns_usb3_mdio_probe(struct mdio_device *mdiodev)
 		return err;
 
 	usb3->dmp = devm_ioremap_resource(dev, &res);
-	if (IS_ERR(usb3->dmp)) {
-		dev_err(dev, "Failed to map DMP regs\n");
+	if (IS_ERR(usb3->dmp))
 		return PTR_ERR(usb3->dmp);
-	}
 
 	usb3->phy = devm_phy_create(dev, NULL, &ops);
 	if (IS_ERR(usb3->phy)) {