git: remove redundant error checking (#86937)

* remove redundant error checking that makes bad error message

Co-authored-by: Sloane Hertel <19572925+s-hertel@users.noreply.github.com>

changelogs/fragments/86937-git-rm-redundant-err-checks.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - git - remove redundant error checks after `run_command(check_rc=True)`

lib/ansible/modules/git.py

@@ -994,9 +994,6 @@ def submodules_fetch(git_path, module, remote, track_submodules, dest):
         begin = get_submodule_versions(git_path, module, dest)
         cmd = [git_path, 'submodule', 'foreach', git_path, 'fetch']
         (rc, out, err) = module.run_command(cmd, check_rc=True, cwd=dest)
-        if rc != 0:
-            module.fail_json(msg="Failed to fetch submodules: %s" % out + err)
-
         if track_submodules:
             # Compare each submodule against its configured remote branch
             after = {}
@@ -1017,8 +1014,6 @@ def submodules_fetch(git_path, module, remote, track_submodules, dest):
             # Compare against the superproject's expectation
             cmd = [git_path, 'submodule', 'status']
             (rc, out, err) = module.run_command(cmd, check_rc=True, cwd=dest)
-            if rc != 0:
-                module.fail_json(msg='Failed to retrieve submodule status: %s' % out + err)
             for line in out.splitlines():
                 if line[0] != ' ':
                     changed = True