perf tests: Move attr.py temp dir cleanup into finally section

Currently if there's 'Unsup' exception raised, we do not clean up the
temp directory. Solving this by adding 'finally' to make the cleanup in
any case.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1352390461-15404-1-git-send-email-jolsa@redhat.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/attr.py

@@ -228,6 +228,7 @@ class Test(object):
     def run(self):
         tempdir = tempfile.mkdtemp();
 
+        try:
             # run the test script
             self.run_cmd(tempdir);
 
@@ -244,6 +245,7 @@ class Test(object):
             self.compare(self.expect, self.result)
             self.compare(self.result, self.expect)
 
+        finally:
             # cleanup
             shutil.rmtree(tempdir)