drm/msm: switch to postclose

I didn't spot anything that would require ordering here (well not
anywhere else either), and I'm trying to unify at least modern drivers
on one close hook.

Cc: Rob Clark <robdclark@gmail.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/msm_drv.c

@@ -541,7 +541,7 @@ static int msm_open(struct drm_device *dev, struct drm_file *file)
 	return 0;
 }
 
-static void msm_preclose(struct drm_device *dev, struct drm_file *file)
+static void msm_postclose(struct drm_device *dev, struct drm_file *file)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	struct msm_file_private *ctx = file->driver_priv;
@@ -814,7 +814,7 @@ static struct drm_driver msm_driver = {
 				DRIVER_ATOMIC |
 				DRIVER_MODESET,
 	.open               = msm_open,
-	.preclose           = msm_preclose,
+	.postclose           = msm_postclose,
 	.lastclose          = msm_lastclose,
 	.irq_handler        = msm_irq,
 	.irq_preinstall     = msm_irq_preinstall,