It is not reasonable to continue when version_id mismatch.

Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
---
 migration/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/migration/ram.c b/migration/ram.c
index 66792568e2..69c8a6bb0f 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -4217,7 +4217,7 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
     seq_iter++;
 
     if (version_id != 4) {
-        ret = -EINVAL;
+        return -EINVAL;
     }
 
     if (!migrate_use_compression()) {
-- 
2.17.1