If msi_init fails, the thread has already been created and the mutex/condvar are not destroyed. Initialize everything only after the point where pci_edu_realize cannot fail. Reported-by: Markus Armbruster <armbru@redhat.com> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>