You can install MATLAB Support Package for Raspberry Pi without the Simulink Support package. Just uncheck Simulink support package in the installer GUI.
What network configuration did you choose when connecting your Raspberry Pi to the network (in the "Configure network" window)?
Work-around: If you created the SD card for the Raspberry Pi, just skip the "Connect the Raspberry Pi Hardware" GUI by clicking "Cancel" button. Then on the MATLAB command line execute:
The command above should display the IP address of your Raspberry Pi. Using this IP address, execute the following:
>> rpi = raspi('<IP address of your Raspberry Pi>')
Once you can establish the connection, you should be able to run Simulink or MATLAB examples for Raspberry Pi.