drm/amdgpu: fix fw leak in non-powerplay dpm code

We need to release the firmware on driver tear down.

Signed-off-by: Alex Deucher <[e-mail]>

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

···
 	ci_dpm_fini(adev);
 	mutex_unlock(&adev->pm.mutex);
 
+	release_firmware(adev->pm.fw);
+	adev->pm.fw = NULL;
+
 	return 0;
 }
 

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

···
 
 static int fiji_dpm_sw_fini(void *handle)
 {
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	release_firmware(adev->pm.fw);
+	adev->pm.fw = NULL;
+
 	return 0;
 }
 

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

···
 
 static int iceland_dpm_sw_fini(void *handle)
 {
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	release_firmware(adev->pm.fw);
+	adev->pm.fw = NULL;
+
 	return 0;
 }
 

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

···
 
 static int tonga_dpm_sw_fini(void *handle)
 {
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	release_firmware(adev->pm.fw);
+	adev->pm.fw = NULL;
+
 	return 0;
 }