can: esd_usb2: fix memory leak on disconnect
commit efbd50d2 upstream. It seems struct esd_usb2 dev is not deallocated on disconnect. The patch adds the missing deallocation. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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