fix: escape function after successful clone

[p5]

Introduced in https://github.com/loft-sh/devpod/commit/350fac9f6ff85a825559ecbe809ef3e3ae8245f6 was a logic error where if CloneRepository succeeds without an error, the function is not exited and is caught by the catch-all

return fmt.Errorf("either workspace repository, image or local-folder is required")

This PR updates the function so that if there's no error returned from CloneRepository, the function exits.

[p5]

Sorry, I'm terrible at naming stuff. If you know of a better title, feel free to change it :)

[pascalbreuninger]

@p5 thanks for the PR, makes sense