[PATCH] bpftool: Fix memory leak in do_build_table_cb

[Miaoqian Lin]

strdup() allocates memory for path. We need to release the memory in
the following error paths. Add free() to avoid memory leak.

Fixes: 8f184732b60b ("bpftool: Switch to libbpf's hashmap for pinned paths of BPF objects")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
 tools/bpf/bpftool/common.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c
index 0cdb4f711510..8a820356525e 100644
--- a/tools/bpf/bpftool/common.c
+++ b/tools/bpf/bpftool/common.c
@@ -499,9 +499,11 @@ static int do_build_table_cb(const char *fpath, const struct stat *sb,
 	if (err) {
 		p_err("failed to append entry to hashmap for ID %u, path '%s': %s",
 		      pinned_info.id, path, strerror(errno));
-		goto out_close;
+		goto out_free;
 	}
 
+out_free:
+	free(path);
 out_close:
 	close(fd);
 out_ret:
-- 
2.25.1