[PATCH -next] drm/mcde: dsi: Fix return value check in dev_err()

[Wei Yongjun]

In case of error, the function of_drm_find_bridge() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should be
replaced with NULL test.

Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/gpu/drm/mcde/mcde_dsi.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c
index 7af5ebb0c436..e705afc08c4e 100644
--- a/drivers/gpu/drm/mcde/mcde_dsi.c
+++ b/drivers/gpu/drm/mcde/mcde_dsi.c
@@ -1073,10 +1073,9 @@ static int mcde_dsi_bind(struct device *dev, struct 
device *master,
                        panel = NULL;
 
                        bridge = of_drm_find_bridge(child);
-                       if (IS_ERR(bridge)) {
-                               dev_err(dev, "failed to find bridge (%ld)\n",
-                                       PTR_ERR(bridge));
-                               return PTR_ERR(bridge);
+                       if (!bridge) {
+                               dev_err(dev, "failed to find bridge\n");
+                               return -EINVAL;
                        }
                }
        }