
A htt message arrived after ipa context is freed as part of deinitialization which was dereferenced by event handler assigned to pdev->ipa_uc_op_cb, resulting in crash. To fix this, during deinit pdev->ipa_uc_op_cb is deregistered and assigned NULL before freeing up ipa context. Change-Id: I8125cb104a538e88cda93960f7443129fabd850a CRs-Fixed: 2793295