irda: sh_irda: use devm_request_irq()

Huqiu reported current sh_irda driver doesn't
call free_irq() in spite of using request_irq().
This patch replaces request_irq() into devm_request_irq()
to solve this issue

Reported-by: Huqiu Liu<huqiuliu@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/irda/sh_irda.c

@@ -804,7 +804,7 @@ static int sh_irda_probe(struct platform_device *pdev)
 		goto err_mem_4;
 
 	platform_set_drvdata(pdev, ndev);
-	err = request_irq(irq, sh_irda_irq, 0, "sh_irda", self);
+	err = devm_request_irq(&pdev->dev, irq, sh_irda_irq, 0, "sh_irda", self);
 	if (err) {
 		dev_warn(&pdev->dev, "Unable to attach sh_irda interrupt\n");
 		goto err_mem_4;