[PATCH RESEND] drm/amd/display: Initialize return value in dm_cache_state()

[Eslam Khafagy <eslam.medhat1993@gmail.com>]

Initialize the return variable "r" to 0 in dm_cache_state() to fix
a potential use of uninitialized variable warning.

The return value for this function might not be a PTR_ERR, in casse if
condition fails. In that case we ensure predictable reutrn.

Signed-off-by: Eslam Khafagy <eslam.medhat1993@gmail.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 8e1622bf7a42..6b4f3eb9ce48 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -3115,7 +3115,7 @@ static void hpd_rx_irq_work_suspend(struct amdgpu_display_manager *dm)
 
 static int dm_cache_state(struct amdgpu_device *adev)
 {
-	int r;
+	int r = 0;
 
 	adev->dm.cached_state = drm_atomic_helper_suspend(adev_to_drm(adev));
 	if (IS_ERR(adev->dm.cached_state)) {
-- 
2.43.0