[PATCH] sched: correct sched_move_domain()'s cleanup path

[Jan Beulich]

It is only in the error case that we want to clean up the new pool's
scheduler data; in the success case it's rather the old scheduler's
data which needs cleaning up.

Reported-by: René Winther Højgaard <rene...@proton.me>
Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Juergen Gross <jgr...@suse.com>

--- a/xen/common/sched/core.c
+++ b/xen/common/sched/core.c
@@ -810,7 +810,7 @@ int sched_move_domain(struct domain *d,
     for ( unit = old_units; unit; )
     {
         if ( unit->priv )
-            sched_free_udata(c->sched, unit->priv);
+            sched_free_udata(ret ? c->sched : old_ops, unit->priv);
         old_unit = unit;
         unit = unit->next_in_list;
         xfree(old_unit);