KVM: kvm->arch.vioapic should be NULL if kvm_ioapic_init() failure

kvm->arch.vioapic should be NULL in case of kvm_ioapic_init() failure
due to cannot register io dev.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index a2edfd177fafae3e0c3c455d2b9ca94ef619e663..f3d06934ae6d2f544d6eca8f2a5753788f34a26f 100644 (file)
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -393,8 +393,10 @@ int kvm_ioapic_init(struct kvm *kvm)
        mutex_lock(&kvm->slots_lock);
        ret = kvm_io_bus_register_dev(kvm, KVM_MMIO_BUS, &ioapic->dev);
        mutex_unlock(&kvm->slots_lock);
-       if (ret < 0)
+       if (ret < 0) {
+               kvm->arch.vioapic = NULL;
                kfree(ioapic);
+       }
 
        return ret;
 }