[PATCH -next] net/mlx4_core: Add missing iounmap() in error path

[Zou Wei]

This fixes the following coccicheck warning:

drivers/net/ethernet/mellanox/mlx4/crdump.c:200:2-8: ERROR: missing iounmap;
ioremap on line 190 and execution via conditional on line 198

Fixes: 7ef19d3b1d5e ("devlink: report error once U32_MAX snapshot ids have been used")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zou Wei <zou_wei@xxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx4/crdump.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/mellanox/mlx4/crdump.c b/drivers/net/ethernet/mellanox/mlx4/crdump.c
index 73eae80e..ac5468b 100644
--- a/drivers/net/ethernet/mellanox/mlx4/crdump.c
+++ b/drivers/net/ethernet/mellanox/mlx4/crdump.c
@@ -197,6 +197,7 @@ int mlx4_crdump_collect(struct mlx4_dev *dev)
 	err = devlink_region_snapshot_id_get(devlink, &id);
 	if (err) {
 		mlx4_err(dev, "crdump: devlink get snapshot id err %d\n", err);
+		iounmap(cr_space);
 		return err;
 	}
 
-- 
2.6.2