usb: chipidea: usb2: remove unneeded semicolon

Fix the following coccicheck warning:

drivers/usb/chipidea/ci_hdrc_usb2.c:75:28-29: Unneeded semicolon

Fixes: c2de37b31f17 ("usb: chipidea: usb2: make clock optional")
Reviewed-by: Michał Mirosław <[e-mail]>
Signed-off-by: Jason Yan <[e-mail]>
Signed-off-by: Peter Chen <[e-mail]>

drivers/usb/chipidea/ci_hdrc_usb2.c

···
 
 	priv->clk = devm_clk_get_optional(dev, NULL);
 	if (IS_ERR(priv->clk))
-		return PTR_ERR(priv->clk);;
+		return PTR_ERR(priv->clk);
 
 	ret = clk_prepare_enable(priv->clk);
 	if (ret) {