RDMA/mlx5: remove variable i

Variable i is just being incremented and it's never used
anywhere else. The variable and the increment are redundant so
remove it.
Signed-off-by: NColin Ian King <colin.i.king@gmail.com>
Message-Id: <20221024133756.2158497-1-colin.i.king@gmail.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

drivers/vdpa/mlx5/core/mr.c

@@ -311,7 +311,6 @@ static int add_direct_chain(struct mlx5_vdpa_dev *mvdev, u64 start, u64 size, u8
 	u64 st;
 	u64 sz;
 	int err;
-	int i = 0;
 
 	st = start;
 	while (size) {
@@ -336,7 +335,6 @@ static int add_direct_chain(struct mlx5_vdpa_dev *mvdev, u64 start, u64 size, u8
 		mr->num_directs++;
 		mr->num_klms++;
 		st += sz;
-		i++;
 	}
 	list_splice_tail(&tmp, &mr->head);
 	return 0;