fm: Set lib_running variable only on cleanup

On SSR, we receive HW_ERR_EVENT,we set lib_running variable to 0.
Because of this, hci tx and monitor thread exits before cleanup or exit
happens, causing RX thread to be blocked on cond_wait and failure
happens.
Hence not setting variable during event read.

Change-Id: I82891e12c83fe5d06dbfec060d1ace1231fc25fd

fm_hci/fm_hci.c

@@ -229,7 +229,6 @@ static int read_fm_event(struct fm_hci_t *hci, struct fm_event_header_t *pbuf, i
                             pthread_cond_signal(&hci->cmd_credits_cond);
                         } else if (pbuf->evt_code == FM_HW_ERR_EVENT) {
                               ALOGI("%s: FM H/w Err Event Recvd. Event Code: 0x%2x", __func__, pbuf->evt_code);
-                              lib_running =0;
                               hci->vendor->ssr_cleanup(0x22);
                               status  = power(hci, FM_RADIO_DISABLE);
                               if (status < 0) {