There is no good reason to use logrus and os.Exit() here, other parts of
this function already return the error so do the same. The main podman
process will exit then with the normal formatted error message.
And also log an error about the last return which should never happen as
we should have exited above if the re-exec worked or errored out.
Signed-off-by: Paul Holzinger <pholzing@redhat.com>