drm/amdgpu: fix amdgpu_job_free_resources v2

It can be that neither fence were initialized when we run out of UVD
streams for example.

v2: fix typo breaking compile

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2324Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x

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

@@ -161,8 +161,14 @@ void amdgpu_job_free_resources(struct amdgpu_job *job)
 	struct dma_fence *f;
 	unsigned i;
 
-	/* use sched fence if available */
-	f = job->base.s_fence ? &job->base.s_fence->finished :  &job->hw_fence;
+	/* Check if any fences where initialized */
+	if (job->base.s_fence && job->base.s_fence->finished.ops)
+		f = &job->base.s_fence->finished;
+	else if (job->hw_fence.ops)
+		f = &job->hw_fence;
+	else
+		f = NULL;
+
 	for (i = 0; i < job->num_ibs; ++i)
 		amdgpu_ib_free(ring->adev, &job->ibs[i], f);
 }