Pointer 'dp_ctx' returned from call to function 'dp_psoc_get_priv'
may be NULL in below APIs:
1. dp_reset_tcp_delack
2. dp_bus_bandwidth_init
3. dp_bus_bandwidth_deinit
4. dp_bus_bw_compute_timer_try_start
5. dp_bus_bw_compute_timer_try_stop
6. ucfg_dp_set_cmn_dp_handle
7. __dp_bus_bw_compute_timer_start
Fix is to add NULL check for dp_ctx before use.
Change-Id: I5f9ea6ae8ce3bb13631ad9a2dfe25d9c3686a33b
CRs-Fixed: 3767091
20f383d502