hw/loongarch/virt: Replace destination error with error_abort

In function virt_cpu_plug() and virt_cpu_unplug(), the error is
impossile. Destination error is not propagated and replaced with
error_abort. With this, the logic is simple.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Acked-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20250324030145.3037408-3-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
1 file changed