migration: Ensure vmstate_save() sets errp
Merge Request Required Information
Summary of Changes
Not all migration paths always set errp on error, but it is expected they do. This can lead to NULL dereferences, which is reproducible when killing the virtiofsd process (on the source) during migration.
This patch ensures errp is always set on error.
(Merged upstream.)
Approved Development Ticket(s)
Jira: RHEL-63051
Edited by Miroslav Rezanina