[media] exynos4-is: Fix error paths in probe() for !pm_runtime_enabled()

Ensure clk_disable() is called on error paths only when clk_enable()
was previously called.

This fixes following build warning:

.../media-git/drivers/media/platform/exynos4-is/fimc-lite.c: In function 'fimc_lite_probe':
.../media-git/drivers/media/platform/exynos4-is/fimc-lite.c:1583:1: warning: label 'err_sd' defined but not used [-Wunused-label]
Reported-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/exynos4-is/fimc-core.c

@@ -1027,6 +1027,7 @@ static int fimc_probe(struct platform_device *pdev)
 	return 0;
 
 err_gclk:
+	if (!pm_runtime_enabled(dev))
 		clk_disable(fimc->clock[CLK_GATE]);
 err_sd:
 	fimc_unregister_capture_subdev(fimc);

drivers/media/platform/exynos4-is/fimc-lite.c

@@ -1563,7 +1563,7 @@ static int fimc_lite_probe(struct platform_device *pdev)
 	if (!pm_runtime_enabled(dev)) {
 		ret = clk_enable(fimc->clock);
 		if (ret < 0)
-			goto err_clk_put;
+			goto err_sd;
 	}
 
 	fimc->alloc_ctx = vb2_dma_contig_init_ctx(dev);
@@ -1579,6 +1579,7 @@ static int fimc_lite_probe(struct platform_device *pdev)
 	return 0;
 
 err_clk_dis:
+	if (!pm_runtime_enabled(dev))
 		clk_disable(fimc->clock);
 err_sd:
 	fimc_lite_unregister_capture_subdev(fimc);