drm/tegra: hdmi: Unwind tegra_hdmi_init() errors

Add missing error unwinding to tegra_hdmi_init(), for consistency.
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/hdmi.c

@@ -1453,22 +1453,31 @@ static int tegra_hdmi_init(struct host1x_client *client)
 	if (err < 0) {
 		dev_err(client->dev, "failed to enable HDMI regulator: %d\n",
 			err);
-		return err;
+		goto output_exit;
 	}
 
 	err = regulator_enable(hdmi->pll);
 	if (err < 0) {
 		dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
-		return err;
+		goto disable_hdmi;
 	}
 
 	err = regulator_enable(hdmi->vdd);
 	if (err < 0) {
 		dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
-		return err;
+		goto disable_pll;
 	}
 
 	return 0;
+
+disable_pll:
+	regulator_disable(hdmi->pll);
+disable_hdmi:
+	regulator_disable(hdmi->hdmi);
+output_exit:
+	tegra_output_exit(&hdmi->output);
+
+	return err;
 }
 
 static int tegra_hdmi_exit(struct host1x_client *client)