gitlab-ci: Fix 'when:' condition in OpenSBI jobs

Jobs depending on another should not use the 'when: always'
condition, because if a dependency failed we should not keep
running jobs depending on it. The correct condition is
'when: on_success'.

Fixes: c6fc0fc1a7 ("gitlab-ci.yml: Add jobs to build OpenSBI firmware binaries")
Reported-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210727142431.1672530-5-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

.gitlab-ci.d/opensbi.yml

@@ -6,14 +6,14 @@
    - .gitlab-ci.d/opensbi.yml
    # or the Dockerfile is modified
    - .gitlab-ci.d/opensbi/Dockerfile
-   when: always
+   when: on_success
  - changes: # or roms/opensbi/ is modified (submodule updated)
    - roms/opensbi/*
-   when: always
+   when: on_success
  - if: '$CI_COMMIT_REF_NAME =~ /^opensbi/' # or the branch/tag starts with 'opensbi'
-   when: always
+   when: on_success
  - if: '$CI_COMMIT_MESSAGE =~ /opensbi/i' # or last commit description contains 'OpenSBI'
-   when: always
+   when: on_success
 
 docker-opensbi:
  extends: .opensbi_job_rules