[PATCH v2] drm/msm/dpu: Fix uninitialized variable

[Ethan Carter Edwards]

There is a possibility for an uninitialized *ret* variable to be
returned in some code paths.

Fix this by initializing *ret* to 0.

Addresses-Coverity-ID: 1642546 ("Uninitialized scalar variable")
Fixes: 774bcfb731765d ("drm/msm/dpu: add support for virtual planes")
Signed-off-by: Ethan Carter Edwards <et...@ethancedwards.com>
---
Changes in v2:
- Return explicit 0 when no error occurs
- Add hardening mailing lists
- Link to v1: 
https://lore.kernel.org/r/20250209-dpu-v1-1-0db666884...@ethancedwards.com
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 
098abc2c0003cde90ce6219c97ee18fa055a92a5..af3e541f60c303eb5212524e877129359b5ca98c
 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -1164,7 +1164,6 @@ int dpu_assign_plane_resources(struct dpu_global_state 
*global_state,
                               unsigned int num_planes)
 {
        unsigned int i;
-       int ret;
 
        for (i = 0; i < num_planes; i++) {
                struct drm_plane_state *plane_state = states[i];
@@ -1173,13 +1172,13 @@ int dpu_assign_plane_resources(struct dpu_global_state 
*global_state,
                    !plane_state->visible)
                        continue;
 
-               ret = dpu_plane_virtual_assign_resources(crtc, global_state,
+               int ret = dpu_plane_virtual_assign_resources(crtc, global_state,
                                                         state, plane_state);
                if (ret)
-                       break;
+                       return ret;
        }
 
-       return ret;
+       return 0;
 }
 
 static void dpu_plane_flush_csc(struct dpu_plane *pdpu, struct dpu_sw_pipe 
*pipe)

---
base-commit: a64dcfb451e254085a7daee5fe51bf22959d52d3
change-id: 20250209-dpu-c3fac78fc617

Best regards,
-- 
Ethan Carter Edwards <et...@ethancedwards.com>