video: tegra20: dc: enable backlight after DC is configured

The goal of panel_set_backlight() is to enable backlight. Hence,
it should be called at the probe end.

Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/video/tegra20/tegra-dc.c b/drivers/video/tegra20/tegra-dc.c
index 856d507..07d6ac9 100644
--- a/drivers/video/tegra20/tegra-dc.c
+++ b/drivers/video/tegra20/tegra-dc.c
@@ -397,12 +397,6 @@
 		return ret;
 	}
 
-	ret = panel_set_backlight(priv->panel, BACKLIGHT_DEFAULT);
-	if (ret) {
-		debug("%s: Cannot set backlight to default, ret=%d\n", __func__, ret);
-		return ret;
-	}
-
 	mmu_set_region_dcache_behaviour(priv->frame_buffer, plat->size,
 					DCACHE_WRITETHROUGH);
 
@@ -415,7 +409,7 @@
 	debug("LCD frame buffer at %08x, size %x\n", priv->frame_buffer,
 	      plat->size);
 
-	return 0;
+	return panel_set_backlight(priv->panel, BACKLIGHT_DEFAULT);
 }
 
 static int tegra_lcd_of_to_plat(struct udevice *dev)