class PublicationsController < InheritedResources::Base
  def show
    edition = Edition.find_or_create_from_panopticon_data(params[:id], current_user)

    if edition.persisted?
      UpdateWorker.perform_async(edition.id.to_s)
      redirect_with_return_to(edition)
      return
    else
      render_new_form(edition)
      return
    end
  end

protected

  def redirect_with_return_to(edition)
    destination = "/editions/#{edition.id}"
    destination += '?return_to=' + params[:return_to] if params[:return_to]
    redirect_to destination
  end

  def render_new_form(edition)
    @publication = edition
    setup_view_paths_for(edition)
    render template: 'new'
  end
end

class PublicationsController < InheritedResources::Base
  def show
    edition = Edition.find_or_create_from_panopticon_data(params[:id], current_user)

    if edition.persisted?
      UpdateWorker.perform_async(edition.id.to_s)
      redirect_with_return_to(edition)
    else
      render_new_form(edition)
    end
  end

protected

  def redirect_with_return_to(edition)
    destination = "/editions/#{edition.id}"
    destination += '?return_to=' + params[:return_to] if params[:return_to]
    redirect_to destination
  end

  def render_new_form(edition)
    @publication = edition
    setup_view_paths_for(edition)
    render template: 'new'
  end
end

Remove some redundant return statements
Remove some redundant return statements
