drm/mediatek: hdmi: clean up drm_bridge_add call

This patch removes unnecessary checking of return value.
Acked-by: NCK Hu <ck.hu@mediatek.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1499071350-25168-14-git-send-email-inki.dae@samsung.com

drivers/gpu/drm/mediatek/mtk_hdmi.c

@@ -1696,11 +1696,7 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
 
 	hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
 	hdmi->bridge.of_node = pdev->dev.of_node;
-	ret = drm_bridge_add(&hdmi->bridge);
-	if (ret) {
-		dev_err(dev, "failed to add bridge, ret = %d\n", ret);
-		return ret;
-	}
+	drm_bridge_add(&hdmi->bridge);
 
 	ret = mtk_hdmi_clk_enable_audio(hdmi);
 	if (ret) {