packaging: setup: fix double naming of one stage

Fix double naming of one stage introduced with 15b69cc

Change-Id: I9648dced383a75768a7a5908cafe924c6810a40f
Related-To: https://bugzilla.redhat.com/1034726
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
(cherry picked from commit 95f82cf4b16d3a2a76e362b4cee9999088169985)