drm/amdgpu: use drm_device pointer directly rather than convert again

The convert from adev is redundant.
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -5588,7 +5588,7 @@ int amdgpu_device_baco_enter(struct drm_device *dev)
 	struct amdgpu_device *adev = drm_to_adev(dev);
 	struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
 
-	if (!amdgpu_device_supports_baco(adev_to_drm(adev)))
+	if (!amdgpu_device_supports_baco(dev))
 		return -ENOTSUPP;
 
 	if (ras && adev->ras_enabled &&
@@ -5604,7 +5604,7 @@ int amdgpu_device_baco_exit(struct drm_device *dev)
 	struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
 	int ret = 0;
 
-	if (!amdgpu_device_supports_baco(adev_to_drm(adev)))
+	if (!amdgpu_device_supports_baco(dev))
 		return -ENOTSUPP;
 
 	ret = amdgpu_dpm_baco_exit(adev);