Make sure intermediate_path exists before adding file_handler

Signed-off-by: Erik Lundell <erik.lundell@arm.com>
Change-Id: I89a6329ae3bcc4e1316f451c71b37d934c3bf4f4

Author: Erik-Lundell

backends/arm/tosa/partitioner.py

@@ -433,8 +433,10 @@ def partition(self, exported_program: ExportedProgram) -> PartitionResult:
 
         tag_constant_data(exported_program)
         if self.intermediate_path is not None and logger.level <= logging.INFO:
+            intermediate_path = Path(self.intermediate_path)
+            intermediate_path.mkdir(parents=True, exist_ok=True)
             file_handler = logging.FileHandler(
-                Path(self.intermediate_path) / "partition_report.txt"
+                intermediate_path / "partition_report.txt"
             )
             logger.addHandler(file_handler)
         logger.info(f"The following nodes were rejected for {self.tosa_spec}:")