pata_samsung_cf: fix ata_host_activate() failure handling

Add missing clk_disable() call to ata_host_activate() failure path.

Cc: Ben Dooks <[e-mail]>
Cc: Kukjin Kim <[e-mail]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[e-mail]>
Reviewed-by: Jingoo Han <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

drivers/ata/pata_samsung_cf.c

···
 
 	platform_set_drvdata(pdev, host);
 
-	return ata_host_activate(host, info->irq,
-			info->irq ? pata_s3c_irq : NULL,
-			0, &pata_s3c_sht);
+	ret = ata_host_activate(host, info->irq,
+				info->irq ? pata_s3c_irq : NULL,
+				0, &pata_s3c_sht);
+	if (ret)
+		goto stop_clk;
+
+	return 0;
 
 stop_clk:
 	clk_disable(info->clk);