KVM: fix kvm_init() error handling

Remove debugfs file if kvm_arch_init() return error
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

virt/kvm/kvm_main.c

@@ -2791,8 +2791,8 @@ int kvm_init(void *opaque, unsigned int vcpu_size,
 	__free_page(bad_page);
 out:
 	kvm_arch_exit();
-	kvm_exit_debug();
 out_fail:
+	kvm_exit_debug();
 	return r;
 }
 EXPORT_SYMBOL_GPL(kvm_init);