[media] s5p-g2d: Fix error handling

According to the surrounding goto, it is likely that 'unprep_clk_gate'
was expected here.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/platform/s5p-g2d/g2d.c

@@ -679,7 +679,7 @@ static int g2d_probe(struct platform_device *pdev)
 						0, pdev->name, dev);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to install IRQ\n");
-		goto put_clk_gate;
+		goto unprep_clk_gate;
 	}
 
 	vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));