clk: mediatek: mt2712: Add error handling to clk_mt2712_apmixed_probe()

This function was completely missing error handling: add it.

Fixes: e2f744a8 ("clk: mediatek: Add MT2712 clock support")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230306140543.1813621-8-angelogioacchino.delregno@collabora.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/mediatek/clk-mt2712.c

@@ -1091,15 +1091,25 @@ static int clk_mt2712_apmixed_probe(struct platform_device *pdev)
 	struct device_node *node = pdev->dev.of_node;
 
 	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
-	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
+	r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
+	if (r)
+		goto free_clk_data;
 
 	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+	if (r) {
+		dev_err(&pdev->dev, "Cannot register clock provider: %d\n", r);
+		goto unregister_plls;
+	}
 
-	if (r != 0)
-		pr_err("%s(): could not register clock provider: %d\n",
-			__func__, r);
+	return 0;
 
+unregister_plls:
+	mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data);
+free_clk_data:
+	mtk_free_clk_data(clk_data);
 	return r;
 }