Subject: [PATCH] fix null dereferencing error

When the allocatation of conn->initial_tasks_pool or
conn->primary_tasks_pool fails there was a goto to
cleanup label where conn->initial_tasks_pool->dd_data
or conn->primary_tasks_pool->dd_data where referenced.
Solution add a cleanup0 lable to goto in these cases.

Signed-off-by: Eyal Salomon <esalomon@mellanox.com>