UPSTREAM: usb: raw-gadget: fix raw_event_queue_fetch locking

If queue->size check in raw_event_queue_fetch() fails (which normally
shouldn't happen, that check is a fail-safe), the function returns
without reenabling interrupts. This patch fixes that issue, along with
propagating the cause of failure to the function caller.

Fixes: f2c2e717642c ("usb: gadget: add raw-gadget interface")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Link: https://lore.kernel.org/r/9f7ce7a1472cfb9447f6c5a494186fa1f2670f6f.1586270396.git.andreyknvl@google.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 147413187
(cherry picked from commit fdd10499de0dbcd2cdfe8108ed162bb00fe6f276)
Change-Id: I602a9c9f8d9c441af9e67d472c00d6fde515c57d
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>