Fix memory allocation for IA64 guest on Xen-unstable.hg with new Qemu. 
After booloon drive ready, we can remove this line safely.

Signed-off-by:Zhang Xiantao <xiantao.zhang@intel.com>

diff -r bbabdebc54ad tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py	Wed Jul 19 21:13:36 2006 +0100
+++ b/tools/python/xen/xend/XendDomainInfo.py	Tue Jul 25 08:54:10 2006 +0800
@@ -1288,6 +1288,7 @@ class XendDomainInfo:
                 # Workaround for architectures that don't yet support
                 # ballooning.
                 init_reservation = m
+                xc.domain_setmaxmem(self.domid, m)
 
             xc.domain_memory_increase_reservation(self.domid, init_reservation,
                                                   0, 0)