OMAPDSS: remove extra out == NULL checks

All the output drivers check for 'out' being NULL, but it can never be
NULL. Remove the check.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
diff --git a/drivers/video/fbdev/omap2/dss/hdmi5.c b/drivers/video/fbdev/omap2/dss/hdmi5.c
index b59ba79..a955a2c 100644
--- a/drivers/video/fbdev/omap2/dss/hdmi5.c
+++ b/drivers/video/fbdev/omap2/dss/hdmi5.c
@@ -373,7 +373,7 @@
 
 	mutex_lock(&hdmi.lock);
 
-	if (out == NULL || out->manager == NULL) {
+	if (out->manager == NULL) {
 		DSSERR("failed to enable display: no output/manager\n");
 		r = -ENODEV;
 		goto err0;