usb: mdm_bridge: Fix probe return value for unsupported interfaces

Bridge driver probe was returning 0 (success) for unsupported
interfaces. This caused probe for other interface drivers
not getting called. Hence return -ENODEV for unsupported interfaces.

Change-Id: I88fef382d378e4c71488983f134b680e7003be77
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
diff --git a/drivers/usb/misc/mdm_data_bridge.c b/drivers/usb/misc/mdm_data_bridge.c
index 7c44a9a..6fe5b1d 100644
--- a/drivers/usb/misc/mdm_data_bridge.c
+++ b/drivers/usb/misc/mdm_data_bridge.c
@@ -779,7 +779,7 @@
 	usb_get_dev(udev);
 
 	if (iface_num != DUN_IFACE_NUM && iface_num != TETHERED_RMNET_IFACE_NUM)
-		return 0;
+		return -ENODEV;
 
 	numends = iface->cur_altsetting->desc.bNumEndpoints;
 	for (i = 0; i < numends; i++) {