net: bcmgenet: 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: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NYueHaibing <yuehaibing@huawei.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/genet/bcmgenet.c

@@ -3437,7 +3437,6 @@ static int bcmgenet_probe(struct platform_device *pdev)
 	struct bcmgenet_priv *priv;
 	struct net_device *dev;
 	const void *macaddr;
-	struct resource *r;
 	unsigned int i;
 	int err = -EIO;
 	const char *phy_mode_str;
@@ -3477,8 +3476,7 @@ static int bcmgenet_probe(struct platform_device *pdev)
 		macaddr = pd->mac_address;
 	}
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, r);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base)) {
 		err = PTR_ERR(priv->base);
 		goto err;