[PATCH net 3/3] net: cdc_ncm: fix error path for single interface probing

["Bjørn Mork" <bjorn-yOkvZcmFvRU@public.gmane.org>]

commit bbc8d92 (net: cdc_ncm: add Huawei devices) implemented
support for devices with a single combined control and data
interface. Fix up the error path so that we do not double
release such interfaces in case of probing failures.

Signed-off-by: Bjørn Mork <bjorn-yOkvZcmFvRU@public.gmane.org>
---
 drivers/net/usb/cdc_ncm.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 4041159..2c4b41f 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -524,7 +524,8 @@ advance:
 error2:
 	usb_set_intfdata(ctx->control, NULL);
 	usb_set_intfdata(ctx->data, NULL);
-	usb_driver_release_interface(driver, ctx->data);
+	if (ctx->data != ctx->control)
+		usb_driver_release_interface(driver, ctx->data);
 error:
 	cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]);
 	dev->data[0] = 0;
-- 
1.7.10.4

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