qcacld-3.0: Check he_caps before dereferencing

Before populating the nss information into the session,
for a connection, check if HE is supported and then
populate the configuration.

Change-Id: I422e4c388bc71133fec15d053e713b9d10149b09
CRs-Fixed: 2099374

core/mac/src/pe/lim/lim_assoc_utils.c

@@ -1781,7 +1781,7 @@ lim_populate_peer_rate_set(tpAniSirGlobal pMac,
 	lim_populate_he_mcs_set(pMac, pRates, he_caps,
 			psessionEntry, psessionEntry->nss);
 
-	if (IS_DOT11_MODE_HE(psessionEntry->dot11mode)) {
+	if (IS_DOT11_MODE_HE(psessionEntry->dot11mode) && he_caps) {
 		psessionEntry->nss = he_caps->nss_supported;
 	} else if (IS_DOT11_MODE_VHT(psessionEntry->dot11mode)) {
 		if ((pRates->vhtRxMCSMap & MCSMAPMASK2x2) == MCSMAPMASK2x2)
@@ -1789,6 +1789,7 @@ lim_populate_peer_rate_set(tpAniSirGlobal pMac,
 	} else if (pRates->supportedMCSSet[1] == 0) {
 		psessionEntry->nss = NSS_1x1_MODE;
 	}
+	pe_debug("nss: %d", psessionEntry->nss);
 
 	return eSIR_SUCCESS;
 } /*** lim_populate_peer_rate_set() ***/