drm/amdgpu/dpm: flush any thermal work on fini

Flush any outstanding thermal work before tearing down
the dpm driver.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/ci_dpm.c

@@ -6236,6 +6236,8 @@ static int ci_dpm_sw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	flush_work(&adev->pm.dpm.thermal.work);
+
 	mutex_lock(&adev->pm.mutex);
 	amdgpu_pm_sysfs_fini(adev);
 	ci_dpm_fini(adev);

drivers/gpu/drm/amd/amdgpu/kv_dpm.c

@@ -3063,6 +3063,8 @@ static int kv_dpm_sw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	flush_work(&adev->pm.dpm.thermal.work);
+
 	mutex_lock(&adev->pm.mutex);
 	amdgpu_pm_sysfs_fini(adev);
 	kv_dpm_fini(adev);

drivers/gpu/drm/amd/amdgpu/si_dpm.c

@@ -7777,6 +7777,8 @@ static int si_dpm_sw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+	flush_work(&adev->pm.dpm.thermal.work);
+
 	mutex_lock(&adev->pm.mutex);
 	amdgpu_pm_sysfs_fini(adev);
 	si_dpm_fini(adev);