usb: musb: fix error return code in da8xx_musb_init()

Fix to return a negative error code -ENODEV instead of 0 as before
commit 09721ba6 ("usb: musb: da8xx: Call earlier
clk_prepare_enable()") did.
Signed-off-by: Wang Yufen <wangyufen@huawei.com>
Link: https://lore.kernel.org/r/1669473332-14165-1-git-send-email-wangyufen@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/musb/da8xx.c

@@ -368,8 +368,10 @@ static int da8xx_musb_init(struct musb *musb)
 
 	/* Returns zero if e.g. not clocked */
 	rev = musb_readl(reg_base, DA8XX_USB_REVISION_REG);
-	if (!rev)
+	if (!rev) {
+		ret = -ENODEV;
 		goto fail;
+	}
 
 	musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
 	if (IS_ERR_OR_NULL(musb->xceiv)) {