pwm: sun4i: Fix inconsistent IS_ERR and PTR_ERR

Fix inconsistent IS_ERR and PTR_ERR in sun4i_pwm_probe().

The proper pointers to be passed as arguments are pwm->clk and pwm->bus_clk.

This bug was detected with the help of Coccinelle.

Fixes: b8d74644 ("pwm: sun4i: Prefer "mod" clock to unnamed")
Fixes: 5b090b43 ("pwm: sun4i: Add an optional probe for bus clock")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-sun4i.c

@@ -422,7 +422,7 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
 	 */
 	pwm->clk = devm_clk_get_optional(&pdev->dev, "mod");
 	if (IS_ERR(pwm->clk)) {
-		if (PTR_ERR(pwm->rst) != -EPROBE_DEFER)
+		if (PTR_ERR(pwm->clk) != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "get mod clock failed %pe\n",
 				pwm->clk);
 		return PTR_ERR(pwm->clk);
@@ -431,7 +431,7 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
 	if (!pwm->clk) {
 		pwm->clk = devm_clk_get(&pdev->dev, NULL);
 		if (IS_ERR(pwm->clk)) {
-			if (PTR_ERR(pwm->rst) != -EPROBE_DEFER)
+			if (PTR_ERR(pwm->clk) != -EPROBE_DEFER)
 				dev_err(&pdev->dev, "get unnamed clock failed %pe\n",
 					pwm->clk);
 			return PTR_ERR(pwm->clk);
@@ -440,7 +440,7 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
 
 	pwm->bus_clk = devm_clk_get_optional(&pdev->dev, "bus");
 	if (IS_ERR(pwm->bus_clk)) {
-		if (PTR_ERR(pwm->rst) != -EPROBE_DEFER)
+		if (PTR_ERR(pwm->bus_clk) != -EPROBE_DEFER)
 			dev_err(&pdev->dev, "get bus clock failed %pe\n",
 				pwm->bus_clk);
 		return PTR_ERR(pwm->bus_clk);