Fixes the following sparse warning:
drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c:199:6: warning:
 symbol 'mlx5_fpga_tls_send_teardown_cmd' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
                 MLX5_GET(tls_flow, flow, direction_sx));
 }
 
-void mlx5_fpga_tls_send_teardown_cmd(struct mlx5_core_dev *mdev, void *flow,
-                                    u32 swid, gfp_t flags)
+static void mlx5_fpga_tls_send_teardown_cmd(struct mlx5_core_dev *mdev,
+                                           void *flow, u32 swid, gfp_t flags)
 {
        struct mlx5_teardown_stream_context *ctx;
        struct mlx5_fpga_dma_buf *buf;