staging: mei: Organize the initialization state machine.

moving the final state, clearing of the client maps and
updating of mei state out from mei_host_client_properties function.

Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Oren Weil <oren.jer.weil@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>