Make it more clear that post commit return ret is really return 0,

and add a missing drm_atomic_helper_cleanup_planes when
drm_atomic_helper_wait_for_fences fails.

Fixes: 839ca903f12e ("drm/nouveau/kms/nv50: transition to atomic interfaces 
internally")
Cc: Ben Skeggs <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: <[email protected]> # v4.10+
Signed-off-by: Maarten Lankhorst <[email protected]>
---
 drivers/gpu/drm/nouveau/nv50_display.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nv50_display.c 
b/drivers/gpu/drm/nouveau/nv50_display.c
index 42a85c14aea0..8fb55b96c40f 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -4119,7 +4119,7 @@ nv50_disp_atomic_commit(struct drm_device *dev,
        if (!nonblock) {
                ret = drm_atomic_helper_wait_for_fences(dev, state, true);
                if (ret)
-                       goto done;
+                       goto err_cleanup;
        }
 
        for_each_plane_in_state(state, plane, plane_state, i) {
@@ -4147,7 +4147,7 @@ nv50_disp_atomic_commit(struct drm_device *dev,
                if (crtc->state->enable) {
                        if (!drm->have_disp_power_ref) {
                                drm->have_disp_power_ref = true;
-                               return ret;
+                               return 0;
                        }
                        active = true;
                        break;
@@ -4158,7 +4158,10 @@ nv50_disp_atomic_commit(struct drm_device *dev,
                pm_runtime_put_autosuspend(dev->dev);
                drm->have_disp_power_ref = false;
        }
+       goto done;
 
+err_cleanup:
+       drm_atomic_helper_cleanup_planes(dev, state);
 done:
        pm_runtime_put_autosuspend(dev->dev);
        return ret;
-- 
2.11.0

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