[PATCH] drm/vc4: fix uninitialized smatch warnings

[sunliming at linux.dev]

From: sunliming <sunliming at kylinos.cn>

Fix below smatch warnings:
drivers/gpu/drm/vc4/vc4_gem.c:604 vc4_lock_bo_reservations() error: uninitialized symbol 'ret'.

Reported-by: kernel test robot <lkp at intel.com>
Reported-by: Dan Carpenter <dan.carpenter at linaro.org>
Closes: https://lore.kernel.org/r/202504021500.3AM1hKKS-lkp@intel.com/
Signed-off-by: sunliming <sunliming at kylinos.cn>
---
 drivers/gpu/drm/vc4/vc4_gem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
index 8125f87edc60..04ea1696fc5d 100644
--- a/drivers/gpu/drm/vc4/vc4_gem.c
+++ b/drivers/gpu/drm/vc4/vc4_gem.c
@@ -582,7 +582,7 @@ static int
 vc4_lock_bo_reservations(struct vc4_exec_info *exec,
 			 struct drm_exec *exec_ctx)
 {
-	int ret;
+	int ret = 0;
 
 	/* Reserve space for our shared (read-only) fence references,
 	 * before we commit the CL to the hardware.
-- 
2.25.1