For frames that are dropped by FW/HW and returned to host through WBM HTT path, freeing of associated ME buffers (for multicast enhancement) and handling of TSO segments is missing. Create a new function to handle the freeing of buffers in Tx completion path and call this function in both HTT completion and regular completion path. Change-Id: Ibd061830e9325a2b2be9b1779b67b700f4ac08ae CRs-Fixed: 2004658