[PATCH] drm/nouveau: fix an error code in nouveau_backlight_init()

[Dan Carpenter <dan.carpenter@oracle.com>]

If nouveau_get_backlight_name() fails then this should return -ENOMEM
but currently it returns success.

Fixes: db1a0ae21461 ("drm/nouveau/bl: Assign different names to interfaces")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
This is from static analysis.  In the original commit db1a0ae21461
("drm/nouveau/bl: Assign different names to interfaces") then returning
zero seemed to be a very deliberate choice.  I do think it was wrong
though and -ENOMEM is the currect return.

 drivers/gpu/drm/nouveau/nouveau_backlight.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index 72f35a2babcb..3786b1c85182 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -274,6 +274,7 @@ nouveau_backlight_init(struct drm_connector *connector)
 
 	if (!nouveau_get_backlight_name(backlight_name, bl)) {
 		NV_ERROR(drm, "Failed to retrieve a unique name for the backlight interface\n");
+		ret = -ENOMEM;
 		goto fail_alloc;
 	}
 
-- 
2.30.2