OMAP: DSS2: PicoDLP: fix error handling in power_on

Fix two problems in PicoDLP driver's error handling on
picodlp_panel_power_on:

- If omapdss_dpi_display_enable() failed, the its error value was not
  returned
- If picodlp_i2c_init() failed, dssdev->state was erroneously set to
  OMAP_DSS_DISPLAY_ACTIVE
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/displays/panel-picodlp.c

@@ -370,16 +370,18 @@ static int picodlp_panel_power_on(struct omap_dss_device *dssdev)
 	 * then only i2c commands can be successfully sent to dpp2600
 	 */
 	msleep(1000);
-	if (omapdss_dpi_display_enable(dssdev)) {
+	r = omapdss_dpi_display_enable(dssdev);
+	if (r) {
 		dev_err(&dssdev->dev, "failed to enable DPI\n");
 		goto err1;
 	}
-	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
 
 	r = picodlp_i2c_init(picod->picodlp_i2c_client);
 	if (r)
 		goto err;
 
+	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
+
 	return r;
 err:
 	omapdss_dpi_display_disable(dssdev);