ASoC: rockchip: Delete an error message for a failed memory allocation in rockchip_i2s_probe()

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/rockchip/rockchip_i2s.c

@@ -579,10 +579,8 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 	int val;
 
 	i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
-	if (!i2s) {
-		dev_err(&pdev->dev, "Can't allocate rk_i2s_dev\n");
+	if (!i2s)
 		return -ENOMEM;
-	}
 
 	i2s->dev = &pdev->dev;