Revert "drm/amdgpu/vpe: don't emit cond exec command under collaborate mode"

Ready now. Remove this workaround.
This reverts commit d40f6213b52c161fd4634933acbc32103a283363.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Tested-by: Alan Liu <haoping.liu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c
index 70c5cc8..7a65a2b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c
@@ -575,9 +575,6 @@
 {
 	unsigned int ret;
 
-	if (ring->adev->vpe.collaborate_mode)
-		return ~0;
-
 	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_COND_EXE, 0));
 	amdgpu_ring_write(ring, lower_32_bits(addr));
 	amdgpu_ring_write(ring, upper_32_bits(addr));