From: Leon Romanovsky <leonro@mellanox.com>
Date: Wed, 27 Jun 2018 10:44:24 +0300
Subject: RDMA/mlx5: Don't leak UARs in case of free fails
Patch-mainline: v4.19-rc1
Git-commit: 151779996597af671e14a6838589d99fa09ffc6d
References: bsc#1103991 FATE#326007

The failure in releasing one UAR doesn't mean that we can't continue to
release rest of system pages, so don't return too early.

As part of cleanup, there is no need to print warning if
mlx5_cmd_free_uar() fails because such warning will be printed as part of
mlx5_cmd_exec().

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx5/main.c |   18 +++++-------------
 1 file changed, 5 insertions(+), 13 deletions(-)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -1558,25 +1558,17 @@ error:
 	return err;
 }
 
-static int deallocate_uars(struct mlx5_ib_dev *dev, struct mlx5_ib_ucontext *context)
+static void deallocate_uars(struct mlx5_ib_dev *dev,
+			    struct mlx5_ib_ucontext *context)
 {
 	struct mlx5_bfreg_info *bfregi;
-	int err;
 	int i;
 
 	bfregi = &context->bfregi;
-	for (i = 0; i < bfregi->num_sys_pages; i++) {
+	for (i = 0; i < bfregi->num_sys_pages; i++)
 		if (i < bfregi->num_static_sys_pages ||
-		    bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX) {
-			err = mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
-			if (err) {
-				mlx5_ib_warn(dev, "failed to free uar %d, err=%d\n", i, err);
-				return err;
-			}
-		}
-	}
-
-	return 0;
+		    bfregi->sys_pages[i] != MLX5_IB_INVALID_UAR_INDEX)
+			mlx5_cmd_free_uar(dev->mdev, bfregi->sys_pages[i]);
 }
 
 static int mlx5_ib_alloc_transport_domain(struct mlx5_ib_dev *dev, u32 *tdn)