[PATCH] drm/panfrost: Fix the panfrost_mmu_map_fault_addr() error path

[Boris Brezillon]

Make sure all bo->base.pages entries are either NULL or pointing to a
valid page before calling drm_gem_shmem_put_pages().

Reported-by: Tomeu Vizoso <tomeu.viz...@collabora.com>
Cc: <sta...@vger.kernel.org>
Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations")
Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
---
 drivers/gpu/drm/panfrost/panfrost_mmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c 
b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index 569509c2ba27..d76dff201ea6 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -460,6 +460,7 @@ static int panfrost_mmu_map_fault_addr(struct 
panfrost_device *pfdev, int as,
                if (IS_ERR(pages[i])) {
                        mutex_unlock(&bo->base.pages_lock);
                        ret = PTR_ERR(pages[i]);
+                       pages[i] = NULL;
                        goto err_pages;
                }
        }
-- 
2.31.1