phy: ti: am654: Fix a leak in serdes_am654_probe()

If devm_phy_create() fails then we need to call of_clk_del_provider(node)
to undo the call to of_clk_add_provider().

Fixes: 71e2f5c5 ("phy: ti: Add a new SERDES driver for TI's AM654x SoC")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200905124648.GA183976@mwandaSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/ti/phy-am654-serdes.c

@@ -725,8 +725,10 @@ static int serdes_am654_probe(struct platform_device *pdev)
 	pm_runtime_enable(dev);
 
 	phy = devm_phy_create(dev, NULL, &ops);
-	if (IS_ERR(phy))
-		return PTR_ERR(phy);
+	if (IS_ERR(phy)) {
+		ret = PTR_ERR(phy);
+		goto clk_err;
+	}
 
 	phy_set_drvdata(phy, am654_phy);
 	phy_provider = devm_of_phy_provider_register(dev, serdes_am654_xlate);