From: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Date: Sun, 2 Aug 2020 19:15:40 +0800
Subject: tools, bpftool: Fix wrong return value in do_dump()
Patch-mainline: v5.9-rc1
Git-commit: 041549b7b2c7811ec40e705c439211f00ade2dda
References: bsc#1177028

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")
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200802111540.5384-1-tianjia.zhang@linux.alibaba.com
Acked-by: Gary Lin <glin@suse.com>
---
 tools/bpf/bpftool/btf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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;
 		}