[PATCH -next] drm: tegra: fix missing unlock on error

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei at trendmicro.com.cn>

Add the missing unlock before return from function host1x_drm_init()
and host1x_drm_exit() in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei at trendmicro.com.cn>
---
 drivers/gpu/drm/tegra/host1x.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/tegra/host1x.c b/drivers/gpu/drm/tegra/host1x.c
index bdb97a5..39629e6 100644
--- a/drivers/gpu/drm/tegra/host1x.c
+++ b/drivers/gpu/drm/tegra/host1x.c
@@ -176,6 +176,7 @@ int host1x_drm_init(struct host1x *host1x, struct drm_device *drm)
 				dev_err(host1x->dev,
 					"DRM setup failed for %s: %d\n",
 					dev_name(client->dev), err);
+				mutex_unlock(&host1x->clients_lock);
 				return err;
 			}
 		}
@@ -203,6 +204,7 @@ int host1x_drm_exit(struct host1x *host1x)
 				dev_err(host1x->dev,
 					"DRM cleanup failed for %s: %d\n",
 					dev_name(client->dev), err);
+				mutex_unlock(&host1x->clients_lock);
 				return err;
 			}
 		}