Since the context where unlink will be called is unaware of validity of hci_conn pointer, fetch the valid hci_conn before unlink. CRs-fixed: 370274 Change-Id: I30a35acdf75c9b4787af6629c7b32d2d31b8ad80 Signed-off-by: Mallikarjuna GB <gbmalli@codeaurora.org>