Add error handling for incorrect data load.

satpy/readers/oli_tirs_l1_tif.py

@@ -95,7 +95,7 @@ def __init__(self, filename, filename_info, filetype_info, mda, **kwargs):
     def get_dataset(self, key, info):
         """Load a dataset."""
         if self.channel != key["name"]:
-            return
+            raise ValueError(f"Requested channel {key['name']} does not match the reader channel {self.channel}")
 
         logger.debug("Reading %s.", key["name"])