So you want to create a list in Pardot of campaign members from a Salesforce campaign?

I would make a dynamic list in Pardot (create a list and check the box for dynamic list). Select Prospect CRM campaign is <> and select the SFDC campaign from the dropdown.

You can even go a step further if you need and also select the Prospect CRM campaign status and and drill down by if their status is sent or responded.

Hope this helps!