RDMA/hns: remove duplicate assignment to pointer raq

The pointer raq is being assigned twice. Fix this by removing one of the
redundant assignments.

Fixes: 14ba8730 ("RDMA/hns: Remove redundant type cast for general pointers")
Link: https://lore.kernel.org/r/20200528150427.420624-1-colin.king@canonical.com


Addressses-Coverity: ("Evaluation order violation")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>