usb: gadget: multi: fix error return code in cdc_do_config()
Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Introduced by commit 59835a (usb: gadget: multi: use function framework for ACM.) Make rndis_do_config() consistent with cdc_do_config() in the way it handles returning the PTR_ERR(f_acm_*). Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NMichal Nazarewicz <mina86@mina86.com> Signed-off-by: NFelipe Balbi <balbi@ti.com>
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