There is a module in openerp 'crm_partner_map' which help us to show the address of a partner in map. The module adds an additional tab in partner form 'Geolocalization'.There you can write the latitude and longitude of the partner location manually or there is a button 'Geo Localize' which automatically fetches the latitude and longitude from the partner address. Based on this it will show the location of a partner in google map in this tab itself.