drm/exynos: fimd: move shadow unprotection position

The C#_EN_F in SHADOWCON register is updated per frame.
So it should be protected by fimd_shadow_protect_win().

Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

drivers/gpu/drm/exynos/exynos_drm_fimd.c

@@ -751,15 +751,15 @@ static void fimd_win_commit(struct exynos_drm_manager *mgr, int zpos)
 	val |= WINCONx_ENWIN;
 	writel(val, ctx->regs + WINCON(win));
 
-	/* Enable DMA channel and unprotect windows */
-	fimd_shadow_protect_win(ctx, win, false);
-
 	if (ctx->driver_data->has_shadowcon) {
 		val = readl(ctx->regs + SHADOWCON);
 		val |= SHADOWCON_CHx_ENABLE(win);
 		writel(val, ctx->regs + SHADOWCON);
 	}
 
+	/* Enable DMA channel and unprotect windows */
+	fimd_shadow_protect_win(ctx, win, false);
+
 	win_data->enabled = true;
 
 	if (ctx->i80_if)