misc: hisi_hikey_usb: fix return of uninitialized ret status variable

Currently the return value from ret is uninitialized so the function
hisi_hikey_usb_parse_kirin970 is returning a garbage value when
succeeding. Since ret is not used anywhere else in the function, remove
it and just return 0 success at the end of the function.

Fixes: d210a002 ("misc: hisi_hikey_usb: add support for Hikey 970")
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200914135646.99334-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/hisi_hikey_usb.c

@@ -151,7 +151,6 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
 					 struct hisi_hikey_usb *hisi_hikey_usb)
 {
 	struct regulator *regulator;
-	int ret;
 
 	regulator = devm_regulator_get(&pdev->dev, "hub-vdd");
 	if (IS_ERR(regulator)) {
@@ -172,7 +171,7 @@ static int hisi_hikey_usb_parse_kirin970(struct platform_device *pdev,
 	if (IS_ERR(hisi_hikey_usb->reset))
 		return PTR_ERR(hisi_hikey_usb->reset);
 
-	return ret;
+	return 0;
 }
 
 static int hisi_hikey_usb_probe(struct platform_device *pdev)