drm/mediatek: mtk_hdmi: Cleanup function mtk_hdmi_resume()

Remove the error print in case of mtk_hdmi_clk_enable_audio()
failures: since the APIs will already print on their own, having
one in there is redundant.

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20250217154836.108895-34-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Author: AngeloGioacchino Del Regno

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -1760,15 +1760,8 @@ static __maybe_unused int mtk_hdmi_suspend(struct device *dev)
 static __maybe_unused int mtk_hdmi_resume(struct device *dev)
 {
 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
-	int ret = 0;
 
-	ret = mtk_hdmi_clk_enable_audio(hdmi);
-	if (ret) {
-		dev_err(dev, "hdmi resume failed!\n");
-		return ret;
-	}
-
-	return 0;
+	return mtk_hdmi_clk_enable_audio(hdmi);
 }
 
 static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, mtk_hdmi_suspend, mtk_hdmi_resume);