drivers/usb/wusbcore/wa-hc.c: fix error return code

Convert a 0 error return code to a negative one, as returned elsewhere in the
function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@

(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
    when != ret = e3
*if (x == NULL || ...)
{
  ... when != ret = e4
*  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/wusbcore/wa-hc.c b/drivers/usb/wusbcore/wa-hc.c
index 9e4a924616884d7152497bb465e67c1c2167b2bb..a09b65ebd9bb712d02060e760ff2c349bcdc2e77 100644 (file)
--- a/drivers/usb/wusbcore/wa-hc.c
+++ b/drivers/usb/wusbcore/wa-hc.c
@@ -46,8 +46,10 @@ int wa_create(struct wahc *wa, struct usb_interface *iface)
        wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
        wa->xfer_result_size = usb_endpoint_maxp(wa->dti_epd);
        wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
-       if (wa->xfer_result == NULL)
+       if (wa->xfer_result == NULL) {
+               result = -ENOMEM;
                goto error_xfer_result_alloc;
+       }
        result = wa_nep_create(wa, iface);
        if (result < 0) {
                dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",