msm ipa: wan driver fix initilization sequence

Previously QMI service/client on wan-driver starts
first on two different workqueue and following the
main thread still running the wan-driver initilization
sequence and there is some race condition the QMI msg
comes faster than netdev creation and ipa rules
configuration. The fix is to initilize the internel
variables before creating IPA-QMI service and client.

Change-Id: Ia2811d7b970b37eca5e9a56d8bbd9cd6aa52152e
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>