In case of btf_id does not exist, a negative error code -ENOENT
should be returned.

Fixes: c93cc69004df3 ("bpftool: add ability to dump BTF types")
Cc: Andrii Nakryiko <andr...@fb.com>
Signed-off-by: Tianjia Zhang <tianjia.zh...@linux.alibaba.com>
---
 tools/bpf/bpftool/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index faac8189b285..c2f1fd414820 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -596,7 +596,7 @@ static int do_dump(int argc, char **argv)
                        goto done;
                }
                if (!btf) {
-                       err = ENOENT;
+                       err = -ENOENT;
                        p_err("can't find btf with ID (%u)", btf_id);
                        goto done;
                }
-- 
2.26.2

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