KVM: Unset kvm_arch_ops if arch module loading failed

Otherwise, the core module thinks the arch module is loaded, and won't
let you reload it after you've fixed the bug.

Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c
index a163bca..dc7a8c7 100644 (file)
--- a/drivers/kvm/kvm_main.c
+++ b/drivers/kvm/kvm_main.c
@@ -2464,7 +2464,7 @@ int kvm_init_arch(struct kvm_arch_ops *ops, struct module *module)
 
        r = kvm_arch_ops->hardware_setup();
        if (r < 0)
-           return r;
+               goto out;
 
        on_each_cpu(kvm_arch_ops->hardware_enable, NULL, 0, 1);
        r = register_cpu_notifier(&kvm_cpu_notifier);
@@ -2500,6 +2500,8 @@ out_free_2:
 out_free_1:
        on_each_cpu(kvm_arch_ops->hardware_disable, NULL, 0, 1);
        kvm_arch_ops->hardware_unsetup();
+out:
+       kvm_arch_ops = NULL;
        return r;
 }