usb: musb: fix error return code in omap2430_probe()

Before calling platform_get_resource() in omap2430_probe(), the 'ret' is
re-assgined to 0, it can't return an error code, if platform_get_resource
fails. Set the error code to -EINVAL to fix this.

Fixes: ffbe2feac59b ("usb: musb: omap2430: Fix probe regression for missing resources")
Cc: stable <stable@kernel.org>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221230081730.1655616-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 476f55d1fec3084a33ecd586855d626e01ad4caf..44a21ec865fb219ec80eb34e66c46bc1ee7c6265 100644 (file)
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -411,8 +411,10 @@ static int omap2430_probe(struct platform_device *pdev)
                memset(musb_res, 0, sizeof(*musb_res) * ARRAY_SIZE(musb_res));
 
                res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-               if (!res)
+               if (!res) {
+                       ret = -EINVAL;
                        goto err2;
+               }
 
                musb_res[i].start = res->start;
                musb_res[i].end = res->end;