[tip:perf/urgent] perf metricgroup: Add missing list_del_init() when flushing egroups list

[tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com>]

Commit-ID:  acc7bfb3db9744c4a18c96fd6536069e8647cb11
Gitweb:     https://git.kernel.org/tip/acc7bfb3db9744c4a18c96fd6536069e8647cb11
Author:     Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Thu, 4 Jul 2019 12:20:21 -0300
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 9 Jul 2019 10:13:27 -0300

perf metricgroup: Add missing list_del_init() when flushing egroups list

So that at the end each of the entries have its list node struct cleared
and the egroup list head ends emptied.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-dxzj1ah350fy9ec0xbhb15b6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/metricgroup.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 0d8c840f88c0..416a9015405e 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -492,6 +492,7 @@ static void metricgroup__free_egroups(struct list_head *group_list)
 		for (i = 0; i < eg->idnum; i++)
 			zfree(&eg->ids[i]);
 		zfree(&eg->ids);
+		list_del_init(&eg->nd);
 		free(eg);
 	}
 }