radv: Search for guilty contexts at radv_check_status

radv: Search for guilty contexts at radv_check_status

When a GPU hung happens, all contexts are notified. They will receive
INNOCENT_CONTEXT if they are not the context that triggered the reset,
or GUILTY_CONTEXT otherwise.

At radv_check_status(), we return on the first context that was notified
as [GUILTY, INNOCENT]_CONTEXT, without further checks. This can make an
app think that it's innocent if the guilty context is not the first one
on the list of hw_ctx to be checked.

Check every context for a guilty one before returning CONTEXT_INNOCENT.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: André Almeida <andrealmeid@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22648>