[PATCH] bpftool: Fix NULL vs IS_ERR() checking in do_show()

[Miaoqian Lin]

 The hashmap__new() function does not return NULL on errors. It returns
 ERR_PTR(-ENOMEM). Using IS_ERR() to check the return value
 to fix this.

Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
 tools/bpf/bpftool/prog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 515d22952602..564a15f881c6 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -571,7 +571,7 @@ static int do_show(int argc, char **argv)
 	if (show_pinned) {
 		prog_table = hashmap__new(hash_fn_for_key_as_id,
 					  equal_fn_for_key_as_id, NULL);
-		if (!prog_table) {
+		if (IS_ERR(prog_table)) {
 			p_err("failed to create hashmap for pinned paths");
 			return -1;
 		}
-- 
2.17.1