spi: spi-efm32: remove redundant dev_err call in efm32_spi_probe()

There is a error message within devm_ioremap_resource
already, so remove the dev_err call to avoid redundant
error message.
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NMark Brown <broonie@linaro.org>

drivers/spi/spi-efm32.c

@@ -396,7 +396,6 @@ static int efm32_spi_probe(struct platform_device *pdev)
 	ddata->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(ddata->base)) {
 		ret = PTR_ERR(ddata->base);
-		dev_err(&pdev->dev, "failed to remap memory\n");
 		goto err;
 	}