Follow-up fix for PGO builder tarball path

Fix a tarball path typo in 43b405692114ba7736e5b1f910246769fb021e56

TEST=Tested with local tryjob
BUG=chromium:937903

Change-Id: I215faa26a9d2b1062ee1f8aecda77aba7a655821
Reviewed-on: https://chromium-review.googlesource.com/1553524
Commit-Ready: Manoj Gupta <manojgupta@chromium.org>
Tested-by: Zhizhou Yang <zhizhouy@google.com>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
diff --git a/cbuildbot/stages/artifact_stages.py b/cbuildbot/stages/artifact_stages.py
index ec5ccac..62af635 100644
--- a/cbuildbot/stages/artifact_stages.py
+++ b/cbuildbot/stages/artifact_stages.py
@@ -985,7 +985,7 @@
 
     out_chroot_path = os.path.join(out_chroot, self.archive_path)
     out_profdata_loc = os.path.join(out_chroot_path, self.PROFDATA)
-    cros_build_lib.CreateTarball(self.PROFDATA_TAR, cwd=out_profdata_loc,
+    cros_build_lib.CreateTarball(self.PROFDATA_TAR, cwd=out_chroot_path,
                                  inputs=[out_profdata_loc])
 
     # Upload profdata tarball