lan78xx: Fix memory leaks
In lan78xx_probe(), a new urb is allocated through usb_alloc_urb() and saved to 'dev->urb_intr'. However, in the following execution, if an error occurs, 'dev->urb_intr' is not deallocated, leading to memory leaks. To fix this issue, invoke usb_free_urb() to free the allocated urb before returning from the function. Signed-off-by: NWenwen Wang <wenwen@cs.uga.edu> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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