mmc: dw_mmc: remove unnecessary debug message

This patch remove unnecessary 'out of memory' message on dw mmc driver.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index a1b80e5..6e4d864 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2546,10 +2546,8 @@
 	u32 clock_frequency;
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata) {
-		dev_err(dev, "could not allocate memory for pdata\n");
+	if (!pdata)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	/* find out number of slots supported */
 	if (of_property_read_u32(dev->of_node, "num-slots",