[media] exynos-gsc: Convert gsc_m2m_resume() from int to void

Since gsc_m2m_resume() always returns 0, convert it to a void instead.

[mszyprow: rebased onto v4.9-rc4]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/exynos-gsc/gsc-core.c

@@ -1023,7 +1023,7 @@ static int gsc_m2m_suspend(struct gsc_dev *gsc)
 	return timeout == 0 ? -EAGAIN : 0;
 }
 
-static int gsc_m2m_resume(struct gsc_dev *gsc)
+static void gsc_m2m_resume(struct gsc_dev *gsc)
 {
 	struct gsc_ctx *ctx;
 	unsigned long flags;
@@ -1036,8 +1036,6 @@ static int gsc_m2m_resume(struct gsc_dev *gsc)
 
 	if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state))
 		gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
-
-	return 0;
 }
 
 static int gsc_probe(struct platform_device *pdev)
@@ -1159,8 +1157,9 @@ static int gsc_runtime_resume(struct device *dev)
 
 	gsc_hw_set_sw_reset(gsc);
 	gsc_wait_reset(gsc);
+	gsc_m2m_resume(gsc);
 
-	return gsc_m2m_resume(gsc);
+	return 0;
 }
 
 static int gsc_runtime_suspend(struct device *dev)