By default, E0 will be uplink and other ports 0/1,0/2/,0/3,0/4 will be used for wired port profiles.
Wired port profiles are global setting and not been applied per AP. In our case this wired port profile can be applied only on E1 port since you got only one wired port on the IAP 225.
You dont need to set anything on eth0 which is by default uplink and you dont need to enable it.
Eth1 could be your uplink switch on the network which can be configured as a access or trunk port and the VLAN assigment can be done based on the requriement.