drm/exynos: fix a warning message

The "ret = regmap_write()" assignment was missing so this error message
is never printed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index 890c9b1..a0def0b 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -129,7 +129,7 @@ static void mic_set_path(struct exynos_mic *mic, bool enable)
        } else
                val &= ~(MIC0_RGB_MUX | MIC0_I80_MUX | MIC0_ON_MUX);
 
-       regmap_write(mic->sysreg, DSD_CFG_MUX, val);
+       ret = regmap_write(mic->sysreg, DSD_CFG_MUX, val);
        if (ret)
                DRM_ERROR("mic: Failed to read system register\n");
 }