I agree with CV, that is how I read it as well. All components to HDMI switcher, then Output from switcher to input on receiver, then output from receiver to TV. Although I think this will make it more difficult to have different surround or any other specific settings you want to use for specific inputs on the receiver as only one input is getting used. Then again it is a digital signal so the receiver should be decoding accordingly.
Is there a chance the switcher only passes through video and not audio, seems unlikely to me, but you never know.