Fix dry_run bug that was making to_bigquery hang indefinitely

Signed-off-by: Cody Lin <codyl@twitter.com>

sdk/python/feast/infra/offline_stores/bigquery.py

@@ -268,17 +268,17 @@ def to_bigquery(self, job_config: bigquery.QueryJobConfig = None) -> Optional[st
 
  bq_job = self.client.query(self.query, job_config=job_config)
 
- block_until_done(client=self.client, bq_job=bq_job)
-
- if bq_job.exception():
- raise bq_job.exception()
-
  if job_config.dry_run:
  print(
  "This query will process {} bytes.".format(bq_job.total_bytes_processed)
  )
  return None
 
+ block_until_done(client=self.client, bq_job=bq_job)
+
+ if bq_job.exception():
+ raise bq_job.exception()
+
  print(f"Done writing to '{job_config.destination}'.")
  return str(job_config.destination)