Return early in reset_seed (#11983)

Author: ananthsub

pytorch_lightning/utilities/seed.py

@@ -87,9 +87,10 @@ def reset_seed() -> None:
     If :func:`pytorch_lightning.utilities.seed.seed_everything` is unused, this function will do nothing.
     """
     seed = os.environ.get("PL_GLOBAL_SEED", None)
+    if seed is None:
+        return
     workers = os.environ.get("PL_SEED_WORKERS", "0")
-    if seed is not None:
-        seed_everything(int(seed), workers=bool(int(workers)))
+    seed_everything(int(seed), workers=bool(int(workers)))
 
 
 def pl_worker_init_function(worker_id: int, rank: Optional[int] = None) -> None:  # pragma: no cover