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: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-efm32.c b/drivers/spi/spi-efm32.c
index ba38452..dbfef3d 100644
--- a/drivers/spi/spi-efm32.c
+++ b/drivers/spi/spi-efm32.c
@@ -396,7 +396,6 @@
 	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;
 	}