clk: mediatek: add devm_of_platform_populate() for MT7622 audsys

Add devm_of_platform_populate() to populate devices which are children
of the root node.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/clk-mt7622-aud.c

@@ -150,11 +150,23 @@ static int clk_mt7622_audiosys_init(struct platform_device *pdev)
 			       clk_data);
 
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
-	if (r)
+	if (r) {
 		dev_err(&pdev->dev,
 			"could not register clock provider: %s: %d\n",
 			pdev->name, r);
 
+		goto err_clk_provider;
+	}
+
+	r = devm_of_platform_populate(&pdev->dev);
+	if (r)
+		goto err_plat_populate;
+
+	return 0;
+
+err_plat_populate:
+	of_clk_del_provider(node);
+err_clk_provider:
 	return r;
 }