All work currently pending will be done first by calling destroy_workqueue,
so there is unnecessary to flush it explicitly.
Reported-by: NZeal Robot <zealci@zte.com.cn>
Signed-off-by: NLv Ruyi <lv.ruyi@zte.com.cn>
Reviewed-by: NSean Christopherson <seanjc@google.com>
Message-Id: <20220401083530.2407703-1-lv.ruyi@zte.com.cn>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>