IB/mlx5: Use MLX5_GET to correctly get end of padding mode

MLX5_GET64 was used on end_padding_mode, which is a 2-bit field.
This is wrong as the calculated offset is incorrect. Using MLX5_GET
instead of MLX5_GET64 to fix that.

Fixes: 0fb2ed66 ('IB/mlx5: Add create and destroy functionality
                     for Raw Packet QP')
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/infiniband/hw/mlx5/qp.c

@@ -1036,7 +1036,7 @@ static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
 	wq = MLX5_ADDR_OF(rqc, rqc, wq);
 	MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
 	MLX5_SET(wq, wq, end_padding_mode,
-		 MLX5_GET64(qpc, qpc, end_padding_mode));
+		 MLX5_GET(qpc, qpc, end_padding_mode));
 	MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
 	MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
 	MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));