phy: miphy28lp: Use PTR_ERR_OR_ZERO

PTR_ERR_OR_ZERO simplifies the code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Gabriel Fernandez<gabriel.fernandez@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
diff --git a/drivers/phy/phy-miphy28lp.c b/drivers/phy/phy-miphy28lp.c
index 9b2848e..174ffd0 100644
--- a/drivers/phy/phy-miphy28lp.c
+++ b/drivers/phy/phy-miphy28lp.c
@@ -1258,10 +1258,7 @@
 	}
 
 	provider = devm_of_phy_provider_register(&pdev->dev, miphy28lp_xlate);
-	if (IS_ERR(provider))
-		return PTR_ERR(provider);
-
-	return 0;
+	return PTR_ERR_OR_ZERO(provider);
 }
 
 static const struct of_device_id miphy28lp_of_match[] = {