minios: have xenbus_printf return the error returned by xenbus_write Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
minios: have xenbus_printf return the error returned by xenbus_write
Signed-off-by: Samuel Thibault <49a5ed162141aa1a2ad45c2f70540ac844521912@eu.citrix.com>

rowhit/xen-minios,rowhit/xen-minios,rowhit/xen-minios