tools/power/x86/intel_pstate_tracer: Fix non root execution for post …

…processing a trace file

This script is supposed to be allowed to run with regular user
privileges if a previously captured trace is being post processed.

Commit fbe3138 (tools/power/x86/intel_pstate_tracer: Free the
trace buffer memory) introduced a bug that breaks that option.

Commit 3545910 (tools/power/x86/intel_pstate_tracer: Add
optional setting of trace buffer memory allocation) moved the code
but kept the bug.

This patch fixes the issue.

Fixes: 3545910 (tools/power/x86/intel_pstate_tracer: Add optional ...)
Signed-off-by: Doug Smythies <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py

@@ -585,9 +585,9 @@ def signal_handler(signal, frame):
 
 read_trace_data(filename)
 
-clear_trace_file()
-# Free the memory
 if interval:
+    clear_trace_file()
+    # Free the memory
     free_trace_buffer()
 
 if graph_data_present == False: