net: Mellanox: Delete unnecessary checks before the function call « vunmap »

---
 drivers/net/ethernet/mellanox/mlx4/alloc.c      | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/alloc.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/alloc.c b/drivers/net/ethernet/mellanox/mlx4/alloc.c
index a716c26..0c51c69 100644
--- a/drivers/net/ethernet/mellanox/mlx4/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx4/alloc.c
@@ -662,7 +662,7 @@ void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf)
 				  buf->direct.buf,
 				  buf->direct.map);
 	else {
-		if (BITS_PER_LONG == 64 && buf->direct.buf)
+		if (BITS_PER_LONG == 64)
 			vunmap(buf->direct.buf);
 
 		for (i = 0; i < buf->nbufs; ++i)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
index 56779c1..201ca6d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -121,7 +121,7 @@ void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf)
 		dma_free_coherent(&dev->pdev->dev, buf->size, buf->direct.buf,
 				  buf->direct.map);
 	else {
-		if (BITS_PER_LONG == 64 && buf->direct.buf)
+		if (BITS_PER_LONG == 64)
 			vunmap(buf->direct.buf);
 
 		for (i = 0; i < buf->nbufs; i++)