drm: atmel-hlcdc: Uninitialized return in atmel_hlcdc_create_outputs()

It's not possible for endpoint to be zero so the test doesn't work.  If
we break on the first iteration through the loop then endpoint is 1 and
"ret" is uninitialized.

Fixes: ebc94461 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170415192142.GA6416@mwanda

drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c

@@ -221,7 +221,8 @@ static int atmel_hlcdc_attach_endpoint(struct drm_device *dev,
 int atmel_hlcdc_create_outputs(struct drm_device *dev)
 {
 	struct device_node *remote;
-	int ret, endpoint = 0;
+	int ret = -ENODEV;
+	int endpoint = 0;
 
 	while (true) {
 		/* Loop thru possible multiple connections to the output */
@@ -236,7 +237,5 @@ int atmel_hlcdc_create_outputs(struct drm_device *dev)
 			return ret;
 	}
 
-	if (!endpoint)
-		return -ENODEV;
 	return ret;
 }