Bluetooth : hidp: Get the valid hci_conn while unlink

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>
1 file changed