[PATCH 1/2] perf data: Show error message when ctf setup failed

[He Kuang <hekuang@huawei.com>]

Show message when errors occurred during ctf conversion setup.

Before this patch:
  $ ./perf data convert --to-ctf=ctf
  $ echo $?
  255

After this patch:
  $ ./perf data convert --to-ctf=ctf
  Error during CTF convert setup.

Signed-off-by: He Kuang <hekuang@huawei.com>
---
 tools/perf/util/data-convert-bt.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index dd17c9a..a5b89b9 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -847,11 +847,15 @@ int bt_convert__perf2ctf(const char *input, const char *path, bool force)
 		(double) c.events_size / 1024.0 / 1024.0,
 		c.events_count);
 
-	/* its all good */
-free_session:
 	perf_session__delete(session);
+	ctf_writer__cleanup(cw);
+
+	return err;
 
+free_session:
+	perf_session__delete(session);
 free_writer:
 	ctf_writer__cleanup(cw);
+	pr_err("Error during CTF convert setup.\n");
 	return err;
 }
-- 
2.3.3.220.g9ab698f