drivers: wifi: csk6: fixed bug with incorrect dereferencing net buf issue

2 job 于bugfix/csk_wifi_issue in 6 minute 和 35 second (queued for 1 second)
状态 作业 ID 名称 覆盖率
  Ztest
已通过 #65014
zgsz-02 generic
ztest_build_only

00:05:00

已通过 #65015
zgsz-03 with-device
ztest_device_test

00:06:21