drm/etnaviv: Fix a leak in submit_pin_objects()

If the mapping address is wrong then we have to release the reference to
it before returning -EINVAL.

Fixes: 088880ddc0b2 ("drm/etnaviv: implement softpin")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index 3b0afa1..54def34 100644 (file)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -238,8 +238,10 @@ static int submit_pin_objects(struct etnaviv_gem_submit *submit)
                }
 
                if ((submit->flags & ETNA_SUBMIT_SOFTPIN) &&
-                    submit->bos[i].va != mapping->iova)
+                    submit->bos[i].va != mapping->iova) {
+                       etnaviv_gem_mapping_unreference(mapping);
                        return -EINVAL;
+               }
 
                atomic_inc(&etnaviv_obj->gpu_active);