sif: WA#3714: Set flush_retry_qp transport timer to infinite

sif: WA#3714: Set flush_retry_qp transport timer to infinite

The flush_retry_qp is configured with a minimum timeout of 6 value
262.144 usec), in combination with bug#4146 (duplicate send requests
not Acked if target RQ is empty) seems to be the reason because
driver is running into some timeouts after applying WA#3714 (waiting
for the completion of the zero post send).

This commit set the flush_retry_qp transport timer to infinite (0 value)

Signed-off-by: Triviño <francisco.trivino@oracle.com>
Reviewed-by: Knut Omang <knut.omang@oracle.com>