diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index dbf64a93d68a..371b4cf31fcd 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -38,6 +38,7 @@ static void smc_diag_msg_common_fill(struct smc_diag_msg *r, struct sock *sk)
 {
 	struct smc_sock *smc = smc_sk(sk);
 
+	r->diag_family = sk->sk_family;
 	if (!smc->clcsock)
 		return;
 	r->id.idiag_sport = htons(smc->clcsock->sk->sk_num);
@@ -45,14 +46,12 @@ static void smc_diag_msg_common_fill(struct smc_diag_msg *r, struct sock *sk)
 	r->id.idiag_if = smc->clcsock->sk->sk_bound_dev_if;
 	sock_diag_save_cookie(sk, r->id.idiag_cookie);
 	if (sk->sk_protocol == SMCPROTO_SMC) {
-		r->diag_family = PF_INET;
 		memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src));
 		memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst));
 		r->id.idiag_src[0] = smc->clcsock->sk->sk_rcv_saddr;
 		r->id.idiag_dst[0] = smc->clcsock->sk->sk_daddr;
 #if IS_ENABLED(CONFIG_IPV6)
 	} else if (sk->sk_protocol == SMCPROTO_SMC6) {
-		r->diag_family = PF_INET6;
 		memcpy(&r->id.idiag_src, &smc->clcsock->sk->sk_v6_rcv_saddr,
 		       sizeof(smc->clcsock->sk->sk_v6_rcv_saddr));
 		memcpy(&r->id.idiag_dst, &smc->clcsock->sk->sk_v6_daddr,