RDMA/i40iw: Avoid reference leaks when processing the AEQ

In this switch there is a reference held on the QP. 'continue' will grab
the next event without releasing the reference, causing a leak.

Change it to 'break' to drop the reference before grabbing the next event.

Fixes: 4e9042e6

 ("i40iw: add hw and utils files")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>