drm/msm: Fix MSM_INFO_GET_IOVA with carveout

[ Upstream commit 6cefa31 ]

The msm_gem_get_iova should be guarded with gpu != NULL and not aspace
!= NULL, because aspace is NULL when using vram carveout.

Fixes: 933415e ("drm/msm: Add support for private address space instances")

Signed-off-by: Iskren Chernev <iskren.chernev@gmail.com>
Tested-by: Alexey Minnekhanov <alexeymin@postmarketos.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/gpu/drm/msm/msm_drv.c

@@ -788,9 +788,10 @@ static int msm_ioctl_gem_info_iova(struct drm_device *dev,
 		struct drm_file *file, struct drm_gem_object *obj,
 		uint64_t *iova)
 {
+	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_file_private *ctx = file->driver_priv;
 
-	if (!ctx->aspace)
+	if (!priv->gpu)
 		return -EINVAL;
 
 	/*