qcacld-3.0: Drop assoc req if SAP is not UP

If SAP is not up, it is meaningless to handle assoc req.

If assoc req is handled, ref peer may be created without deleted in
DFS CAC state, which causes FW does not work.

Change-Id: Ia489fa8cfb4406e782fc240c553f5e3074982380
CRs-Fixed: 2487946

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

@@ -2117,6 +2117,7 @@ void lim_process_assoc_req_frame(struct mac_context *mac_ctx, uint8_t *rx_pkt_in
 	tpSirAssocReq assoc_req;
 	bool dup_entry = false, force_1x1 = false;
 	QDF_STATUS status;
+	struct wlan_objmgr_vdev *vdev;
 
 	lim_get_phy_mode(mac_ctx, &phy_mode, session);
 
@@ -2151,6 +2152,18 @@ void lim_process_assoc_req_frame(struct mac_context *mac_ctx, uint8_t *rx_pkt_in
 			eLIM_MLM_WT_DEL_BSS_RSP_STATE);
 		return;
 	}
+	vdev = session->vdev;
+	if (!vdev) {
+		pe_err("vdev is NULL");
+		return;
+	}
+
+	if (wlan_vdev_is_up(vdev) != QDF_STATUS_SUCCESS) {
+		pe_err("SAP is not up, drop ASSOC REQ on sessionid: %d",
+		       session->peSessionId);
+
+		return;
+	}
 
 	/*
 	 * If a STA is already present in DPH and it is initiating a Assoc