wifi: ath12k: fix legacy peer association due to missing HT or 6 GHz capabilities

Currently SMPS configuration failed when the Information
Elements (IEs) did not contain HT or 6 GHz capabilities. This
caused legacy peer association to fail as legacy peers do not
have HT or 6 GHz capabilities. Fix this by not returning an
error when SMPS configuration fails due to the absence of HT
or 6 GHz capabilities.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Fixes: f0e61dc7 ("wifi: ath12k: refactor SMPS configuration")
Reported-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Reported-by: Zachary Smith <dr.z.smith@gmail.com>
Closes: https://lore.kernel.org/all/CAM=znoFPcXrn5GhDmDmo50Syic3-hXpWvD+vkv8KX5o_ZTo8kQ@mail.gmail.com/Signed-off-by: Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com>
Reported-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://patch.msgid.link/20240612225336.2303119-1-quic_pradeepc@quicinc.com

drivers/net/wireless/ath/ath12k/mac.c

@@ -2257,9 +2257,6 @@ static int ath12k_get_smps_from_capa(const struct ieee80211_sta_ht_cap *ht_cap,
 				     const struct ieee80211_he_6ghz_capa *he_6ghz_capa,
 				     int *smps)
 {
-	if (!ht_cap->ht_supported && !he_6ghz_capa->capa)
-		return -EOPNOTSUPP;
-
 	if (ht_cap->ht_supported)
 		*smps = u16_get_bits(ht_cap->cap, IEEE80211_HT_CAP_SM_PS);
 	else
@@ -2279,6 +2276,9 @@ static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
 	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
 	int smps;
 
+	if (!ht_cap->ht_supported && !he_6ghz_capa->capa)
+		return;
+
 	if (ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps))
 		return;
 
@@ -2758,6 +2758,9 @@ static int ath12k_setup_peer_smps(struct ath12k *ar, struct ath12k_vif *arvif,
 {
 	int smps, ret = 0;
 
+	if (!ht_cap->ht_supported && !he_6ghz_capa)
+		return 0;
+
 	ret = ath12k_get_smps_from_capa(ht_cap, he_6ghz_capa, &smps);
 	if (ret < 0)
 		return ret;