[PATCH] soc: fsl: dpio: Use after free in dpaa2_dpio_remove()

[Dan Carpenter]

The dpaa2_io_down(priv->io) call frees "priv->io" so I've shifted the
code around a little bit to avoid the use after free.

Fixes: 991e873223e9 ("soc: fsl: dpio: use a cpumask to identify which cpus are 
unused")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 drivers/soc/fsl/dpio/dpio-driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/fsl/dpio/dpio-driver.c 
b/drivers/soc/fsl/dpio/dpio-driver.c
index 2d4af32a0dec..a28799b62d53 100644
--- a/drivers/soc/fsl/dpio/dpio-driver.c
+++ b/drivers/soc/fsl/dpio/dpio-driver.c
@@ -220,12 +220,12 @@ static int dpaa2_dpio_remove(struct fsl_mc_device 
*dpio_dev)
 
        dev = &dpio_dev->dev;
        priv = dev_get_drvdata(dev);
+       cpu = dpaa2_io_get_cpu(priv->io);
 
        dpaa2_io_down(priv->io);
 
        dpio_teardown_irqs(dpio_dev);
 
-       cpu = dpaa2_io_get_cpu(priv->io);
        cpumask_set_cpu(cpu, cpus_unused_mask);
 
        err = dpio_open(dpio_dev->mc_io, 0, dpio_dev->obj_desc.id,
-- 
2.17.1