net: ethernet: ti: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/ti/cpsw.c

@@ -2764,7 +2764,7 @@ static int cpsw_probe(struct platform_device *pdev)
 	struct net_device		*ndev;
 	struct cpsw_priv		*priv;
 	void __iomem			*ss_regs;
-	struct resource			*res, *ss_res;
+	struct resource			*ss_res;
 	struct gpio_descs		*mode;
 	const struct soc_device_attribute *soc;
 	struct cpsw_common		*cpsw;
@@ -2798,8 +2798,7 @@ static int cpsw_probe(struct platform_device *pdev)
 		return PTR_ERR(ss_regs);
 	cpsw->regs = ss_regs;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	cpsw->wr_regs = devm_ioremap_resource(dev, res);
+	cpsw->wr_regs = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(cpsw->wr_regs))
 		return PTR_ERR(cpsw->wr_regs);