Make sure we're not lacking a lock/heap destroy when we fail to
create the VM.
Fixes: 53fb1d99ca ("panvk: Transition to explicit VA assignment on v10+")
Reported-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33471>