staging: media: omap4iss: Remove unnecessary 'out of memory' message

This patch removes unnecessay out of memory message fixing the following checkpach.pl warning in iss.c:
WARNING: Possible unnecessary 'out of memory' message
Signed-off-by: Kumari Radha <kumari.radha3@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/omap4iss/iss.c

@@ -1357,10 +1357,8 @@ static int iss_probe(struct platform_device *pdev)
 		return -EINVAL;
 
 	iss = devm_kzalloc(&pdev->dev, sizeof(*iss), GFP_KERNEL);
-	if (!iss) {
-		dev_err(&pdev->dev, "Could not allocate memory\n");
+	if (!iss)
 		return -ENOMEM;
-	}
 
 	mutex_init(&iss->iss_mutex);