drm/amdgpu: make sure we unpin the UVD BO

Releasing pinned BOs is illegal now.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Leo Liu <leo.liu@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210415084730.2057-1-christian.koenig@amd.com

drivers/gpu/drm/amd/amdgpu/uvd_v7_0.c

@@ -363,6 +363,7 @@ static int uvd_v7_0_enc_ring_test_ib(struct amdgpu_ring *ring, long timeout)
 
 error:
 	dma_fence_put(fence);
+	amdgpu_bo_unpin(bo);
 	amdgpu_bo_unreserve(bo);
 	amdgpu_bo_unref(&bo);
 	return r;