[PATCH] drm/amd/display: Use after free in dmub_psr_destroy()

[Dan Carpenter]

These lines need to be re-ordered so that we don't dereference "dmub"
after we just freed it.

Fixes: 4c1a1335dfe0 ("drm/amd/display: Driverside changes to support PSR in DMCUB")
Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
---
 drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
index 2c932c29f1f9..dc858b152c6e 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c
@@ -235,6 +235,6 @@ struct dmub_psr *dmub_psr_create(struct dc_context *ctx)
  */
 void dmub_psr_destroy(struct dmub_psr **dmub)
 {
-	kfree(dmub);
 	*dmub = NULL;
+	kfree(dmub);
 }
-- 
2.11.0