hwrng: hisi - use dev_err_probe

Replace dev_err + return with dev_err_probe.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/char/hw_random/hisi-rng.c

@@ -89,10 +89,8 @@ static int hisi_rng_probe(struct platform_device *pdev)
 	rng->rng.read = hisi_rng_read;
 
 	ret = devm_hwrng_register(&pdev->dev, &rng->rng);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to register hwrng\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "failed to register hwrng\n");
 
 	return 0;
 }