[patch] drm/exynos: IS_ERR() vs NULL bug

[Dan Carpenter]

of_iomap() doesn't return error pointers, it returns NULL on error.

Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>

diff --git a/drivers/gpu/drm/exynos/exynos7_drm_decon.c 
b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
index 63f02e2..9700461 100644
--- a/drivers/gpu/drm/exynos/exynos7_drm_decon.c
+++ b/drivers/gpu/drm/exynos/exynos7_drm_decon.c
@@ -888,8 +888,8 @@ static int decon_probe(struct platform_device *pdev)
        of_node_put(i80_if_timings);

        ctx->regs = of_iomap(dev->of_node, 0);
-       if (IS_ERR(ctx->regs)) {
-               ret = PTR_ERR(ctx->regs);
+       if (!ctx->regs) {
+               ret = -ENOMEM;
                goto err_del_component;
        }