v3dv: do a better job at cleaning up the device on init failure

v3dv: do a better job at cleaning up the device on init failure

These leaks on device creation failure have been there before, but
were only exposed as CTS failures after the recent event refactoring.

Partially fixes:
dEQP-VK.api.device_init.create_instance_device_intentional_alloc_fail.basic
dEQP-VK.api.object_management.alloc_callback_fail.device
dEQP-VK.api.object_management.alloc_callback_fail.device_group

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
cc: mesa-stable

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19458>