c2701a90c6
Currently if you try to probe the virtio ICD on a non-virtio system
it will fail in CreateInstance which causes the loader to spit on the
screen.
However instance creation shouldn't fail, the driver should just
not enumerate any devices in this case. It's a bit tricky to ensure
this, but return instance and then handle instance destruction
and fail device enumeration.
Cc: mesa-stable
Reviewed-by: Ryan Neph
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32266>
(cherry picked from commit 25b8f4f714)
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