In velocity_init_registers(), init_cam_filter() clears mCAMmask which
might have been set by set_multi() (not sure if this can ever occur).
Modified to invoke init_cam_filter() first. Also, clear_isr() is called
twice. Removed the first invocation.

In velocity_found1(), there was a unneeded assignment from vptr to
dev->priv.  Removed.
Signed-off-by: Tejun Heo <tj@home-tj.org>