bpftool: Fix wrong free call in do_show_link

BugLink: https://bugs.launchpad.net/bugs/2060097

[ Upstream commit 2adb2e0fcdf3c6d8e28a5a9c33e458e1037ae5ad ]

The error path frees wrong array, it should be ref_ctr_offsets.

Acked-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Fixes: a7795698f8 ("bpftool: Add support to display uprobe_multi links")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20240119110505.400573-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 78a4c62603f8845b93b0305de1621819980f2308)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

tools/bpf/bpftool/link.c

@@ -977,7 +977,7 @@ again:
 			cookies = calloc(count, sizeof(__u64));
 			if (!cookies) {
 				p_err("mem alloc failed");
-				free(cookies);
+				free(ref_ctr_offsets);
 				free(offsets);
 				close(fd);
 				return -ENOMEM;