kvm: update for: savevm: Allow SaveStateHandler() to return error

From: Alex Williamson <alex.williamson@redhat.com>

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

 kvm-tpr-opt.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)


diff --git a/kvm-tpr-opt.c b/kvm-tpr-opt.c
index 46890e2..632b6d6 100644
--- a/kvm-tpr-opt.c
+++ b/kvm-tpr-opt.c
@@ -296,7 +296,7 @@ void kvm_tpr_access_report(CPUState *env, uint64_t rip, int is_write)
     patch_instruction(env, rip);
 }
 
-static void tpr_save(QEMUFile *f, void *s)
+static int tpr_save(QEMUFile *f, void *s)
 {
     int i;
 
@@ -307,6 +307,8 @@ static void tpr_save(QEMUFile *f, void *s)
     qemu_put_be32s(f, &bios_addr);
     qemu_put_be32s(f, &vapic_phys);
     qemu_put_be32s(f, &vbios_desc_phys);
+
+    return 0;
 }
 
 static int tpr_load(QEMUFile *f, void *s, int version_id)