The vm state change notifier needs to be added only once and not every time
upon sev state initialization. This is important when the SEV guest can be
reset and the initialization needs to happen once per every reset. Therefore,
move addition of vm state change notifier to sev_common_instance_init() as its
called only once.

Signed-off-by: Ani Sinha <anisinha@redhat.com>
---
 target/i386/sev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index c260c162b1..cb2213a32a 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -1917,8 +1917,6 @@ static int sev_common_kvm_init(ConfidentialGuestSupport *cgs, Error **errp)
         return -1;
     }
 
-    qemu_add_vm_change_state_handler(sev_vm_state_change, sev_common);
-
     cgs->ready = true;
 
     return 0;
@@ -2754,6 +2752,8 @@ sev_common_instance_init(Object *obj)
     error_setg(&sev_mig_blocker,
                "SEV: Migration is not implemented");
     migrate_add_blocker(&sev_mig_blocker, &error_fatal);
+
+    qemu_add_vm_change_state_handler(sev_vm_state_change, sev_common);
 }
 
 /* sev guest info common to sev/sev-es/sev-snp */
-- 
2.42.0