simplify function for lintrunner

Signed-off-by: Rob Elliott <robert.elliott@arm.com>

examples/arm/aot_arm_compiler.py

@@ -154,13 +154,14 @@ def forward(self, x):
 ]
 
 
-def get_compile_spec(target: str) -> ArmCompileSpecBuilder:
+def get_compile_spec(target: str, intermediates: bool) -> ArmCompileSpecBuilder:
+    spec_builder = None
     if target == "TOSA":
-        return (
+        spec_builder = (
             ArmCompileSpecBuilder().tosa_compile_spec().set_permute_memory_format(True)
         )
     elif target == "ethos-u55-128":
-        return (
+        spec_builder = (
             ArmCompileSpecBuilder()
             .ethosu_compile_spec(
                 "ethos-u55-128",
@@ -172,7 +173,7 @@ def get_compile_spec(target: str) -> ArmCompileSpecBuilder:
             .set_quantize_io(True)
         )
     elif target == "ethos-u85-128":
-        return (
+        spec_builder = (
             ArmCompileSpecBuilder()
             .ethosu_compile_spec(
                 "ethos-u85-128",
@@ -183,8 +184,13 @@ def get_compile_spec(target: str) -> ArmCompileSpecBuilder:
             .set_permute_memory_format(True)
         )
 
+    if intermediates is not None:
+        spec_builder.dump_intermediate_artifacts_to(args.intermediates)
 
-if __name__ == "__main__":
+    return spec_builder.build()
+
+
+def get_args():
     parser = argparse.ArgumentParser()
     parser.add_argument(
         "-m",
@@ -241,8 +247,12 @@ def get_compile_spec(target: str) -> ArmCompileSpecBuilder:
         required=False,
         help="Location for outputs, if not the default of cwd.",
     )
-
     args = parser.parse_args()
+    return args
+
+
+if __name__ == "__main__":
+    args = get_args()
 
     if args.debug:
         logging.basicConfig(level=logging.DEBUG, format=FORMAT, force=True)
@@ -286,12 +296,11 @@ def get_compile_spec(target: str) -> ArmCompileSpecBuilder:
 
     # As we can target multiple output encodings from ArmBackend, one must
     # be specified.
-    compile_spec = None
-    if args.delegate is True:
-        compile_spec = get_compile_spec(args.target)
-        if args.intermediates is not None:
-            compile_spec.dump_intermediate_artifacts_to(args.intermediates)
-        compile_spec = compile_spec.build()
+    compile_spec = (
+        get_compile_spec(args.target, args.intermediates)
+        if args.delegate is True
+        else None
+    )
 
     logging.debug(f"Exported graph:\n{edge.exported_program().graph}")
     if args.delegate is True: