scsi_dh_alua: uninitialized variable in alua_check_vpd()

The pg_updated variable is support to be set to false at the start but
it is uninitialized.

Fixes: cb0a168cb6b8 ('scsi_dh_alua: update 'access_state' field')
Signed-off-by: Dan Carpenter <[e-mail]>
Reviewed-by: Hannes Reinicke <[e-mail]>
Reviewed-by: Manoj Kumar <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

drivers/scsi/device_handler/scsi_dh_alua.c

···
 {
 	int rel_port = -1, group_id;
 	struct alua_port_group *pg, *old_pg = NULL;
-	bool pg_updated;
+	bool pg_updated = false;
 	unsigned long flags;
 
 	group_id = scsi_vpd_tpg_id(sdev, &rel_port);