i2c: efm32: Use devm_platform_get_and_ioremap_resource()

Make use of devm_platform_get_and_ioremap_resource() provided by
driver core platform instead of duplicated analogue. dev_err() is
removed because it has been done in devm_ioremap_resource().
Signed-off-by: Wang ShaoBo <bobo.shaobowang@huawei.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/busses/i2c-efm32.c

@@ -332,21 +332,15 @@ static int efm32_i2c_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "failed to determine base address\n");
-		return -ENODEV;
-	}
+	ddata->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(ddata->base))
+		return PTR_ERR(ddata->base);
 
 	if (resource_size(res) < 0x42) {
 		dev_err(&pdev->dev, "memory resource too small\n");
 		return -EINVAL;
 	}
 
-	ddata->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(ddata->base))
-		return PTR_ERR(ddata->base);
-
 	ret = platform_get_irq(pdev, 0);
 	if (ret <= 0) {
 		if (!ret)