[PATCH] video: exynos_mipi_dsi: Add missing mutex_unlock

Add a mutex_unlock on the error path.

Signed-off-by: Jonghwan Choi<redacted>
---
  drivers/video/exynos/exynos_mipi_dsi_common.c |    1 +
  1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/video/exynos/exynos_mipi_dsi_common.c

b/drivers/video/exynos/exynos_mipi_dsi_common.c
index 3cd29a4..bd7f4f2 100644

--- a/drivers/video/exynos/exynos_mipi_dsi_common.c
+++ b/drivers/video/exynos/exynos_mipi_dsi_common.c

@@ -377,6 +377,7 @@ int exynos_mipi_dsi_rd_data(struct mipi_dsim_device

*dsim, unsigned int data_id,
  			"data id %x is not supported current DSI spec.\n",
  			data_id);
  
+		mutex_unlock(&dsim->lock);
  		return -EINVAL;
  	}