PCI: tegra: Convert to devm_of_phy_optional_get()

Use the new devm_of_phy_optional_get() helper instead of open-coding the
same operation.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/56508eeadf7fa8692877e872871f10294d48c49d.1674584626.git.geert+renesas@glider.beSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/pci/controller/pci-tegra.c

@@ -1330,12 +1330,9 @@ static struct phy *devm_of_phy_optional_get_index(struct device *dev,
 	if (!name)
 		return ERR_PTR(-ENOMEM);
 
-	phy = devm_of_phy_get(dev, np, name);
+	phy = devm_of_phy_optional_get(dev, np, name);
 	kfree(name);
 
-	if (PTR_ERR(phy) == -ENODEV)
-		phy = NULL;
-
 	return phy;
 }