qcacmn: Unmap ce nbufs before free

freeing mapped memory may lead to resource leaks.

Change-Id: I75664b1a987c1339aa173672c9af670f8b3ffeb8
CRs-Fixed: 2020793

hif/src/ce/ce_main.c

@@ -1233,8 +1233,11 @@ void ce_t2h_msg_ce_cleanup(struct CE_handle *ce_hdl)
 		 *    covered that case. This is not in performance path,
 		 *    so OK to do this.
 		 */
-		if (nbuf)
+		if (nbuf) {
+			qdf_nbuf_unmap_single(ce_state->scn->qdf_dev, nbuf,
+					      QDF_DMA_FROM_DEVICE);
 			qdf_nbuf_free(nbuf);
+		}
 	}
 }
 
@@ -1519,9 +1522,13 @@ hif_pci_ce_send_done(struct CE_handle *copyeng, void *ce_context,
 		 * when last fragment is complteted.
 		 */
 		if (transfer_context != CE_SENDLIST_ITEM_CTXT) {
-			if (scn->target_status == TARGET_STATUS_RESET)
+			if (scn->target_status == TARGET_STATUS_RESET) {
+
+				qdf_nbuf_unmap_single(scn->qdf_dev,
+						      transfer_context,
+						      QDF_DMA_TO_DEVICE);
 				qdf_nbuf_free(transfer_context);
-			else
+			} else
 				msg_callbacks->txCompletionHandler(
 					msg_callbacks->Context,
 					transfer_context, transfer_id,
@@ -1561,6 +1568,7 @@ static inline void hif_ce_do_recv(struct hif_msg_callbacks *msg_callbacks,
 	} else {
 		HIF_ERROR("%s: Invalid Rx msg buf:%p nbytes:%d",
 				__func__, netbuf, nbytes);
+
 		qdf_nbuf_free(netbuf);
 	}
 }