staging: mt7621-dma: Remove print statement on devm_kzalloc error

Remove print statement following error of devm_kzalloc. Issue found with
Coccinelle.
Signed-off-by: Nishka Dasgupta <nishka.dasgupta@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-dma/mtk-hsdma.c

@@ -665,7 +665,6 @@ static int mtk_hsdma_probe(struct platform_device *pdev)
 
 	hsdma = devm_kzalloc(&pdev->dev, sizeof(*hsdma), GFP_KERNEL);
 	if (!hsdma) {
-		dev_err(&pdev->dev, "alloc dma device failed\n");
 		return -EINVAL;
 	}