crypto: sahara - Delete an error message for a failed memory allocation in sahara_probe()

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: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/sahara.c

@@ -1398,10 +1398,8 @@ static int sahara_probe(struct platform_device *pdev)
 	int i;
 
 	dev = devm_kzalloc(&pdev->dev, sizeof(struct sahara_dev), GFP_KERNEL);
-	if (dev == NULL) {
-		dev_err(&pdev->dev, "unable to alloc data struct.\n");
+	if (!dev)
 		return -ENOMEM;
-	}
 
 	dev->device = &pdev->dev;
 	platform_set_drvdata(pdev, dev);