devlink: Fix incorrect skb socket family dumping

The devlink_fmsg_dump_skb function was incorrectly using the socket
type (sk->sk_type) instead of the socket family (sk->sk_family)
when filling the "family" field in the fast message dump.

This patch fixes this to properly display the socket family.

Fixes: 3dbfde7 ("devlink: add devlink_fmsg_dump_skb() function")
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://patch.msgid.link/20260407022730.2393-1-lirongqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: lrq-max

net/devlink/health.c

@@ -1327,7 +1327,7 @@ void devlink_fmsg_dump_skb(struct devlink_fmsg *fmsg, const struct sk_buff *skb)
 	if (sk) {
 		devlink_fmsg_pair_nest_start(fmsg, "sk");
 		devlink_fmsg_obj_nest_start(fmsg);
-		devlink_fmsg_put(fmsg, "family", sk->sk_type);
+		devlink_fmsg_put(fmsg, "family", sk->sk_family);
 		devlink_fmsg_put(fmsg, "type", sk->sk_type);
 		devlink_fmsg_put(fmsg, "proto", sk->sk_protocol);
 		devlink_fmsg_obj_nest_end(fmsg);