virtio: Fix delete_virtqueues function #527
Merged
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The function should return void. the reason is that vdev->func->delete_virtqueues() is optional and return void.
To be generic we should call virtio_delete_virtqueues in all cases. Then depending on the dispatcher we do nothing or call delete_virtqueues()
Fixes: 7f90610 ("virtio: add create_virtqueues and delete_virtqueues in virtio_dispatch")