[tip:perf/core] perf machine: Free root_dir in machine__init() error path

[tip-bot for Jiri Olsa]

Commit-ID:  81f981d7ec43ed93901c12b6521d39b06f1ed3d3
Gitweb:     https://git.kernel.org/tip/81f981d7ec43ed93901c12b6521d39b06f1ed3d3
Author:     Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Thu, 15 Feb 2018 13:26:29 +0100
Committer:  Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Fri, 16 Feb 2018 14:25:56 -0300

perf machine: Free root_dir in machine__init() error path

Free root_dir in machine__init() error path.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20180215122635.24029-4-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 tools/perf/util/machine.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index b05a674..c976384 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -50,6 +50,8 @@ static void machine__threads_init(struct machine *machine)
 
 int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 {
+	int err = -ENOMEM;
+
 	memset(machine, 0, sizeof(*machine));
 	map_groups__init(&machine->kmaps, machine);
 	RB_CLEAR_NODE(&machine->rb_node);
@@ -79,7 +81,7 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 		char comm[64];
 
 		if (thread == NULL)
-			return -ENOMEM;
+			goto out;
 
 		snprintf(comm, sizeof(comm), "[guest/%d]", pid);
 		thread__set_comm(thread, comm, 0);
@@ -87,7 +89,11 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
 	}
 
 	machine->current_tid = NULL;
+	err = 0;
 
+out:
+	if (err)
+		zfree(&machine->root_dir);
 	return 0;
 }