mfd: janz-cmodio: Delete error message for a failed memory allocation

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

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/janz-cmodio.c

@@ -183,10 +183,8 @@ static int cmodio_pci_probe(struct pci_dev *dev,
 	int ret;
 
 	priv = devm_kzalloc(&dev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&dev->dev, "unable to allocate private data\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	pci_set_drvdata(dev, priv);
 	priv->pdev = dev;