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drivers/cmsis_dap_usb: Return with ERROR_FAIL if no CMSIS-DAP device is found.
Even if it does not return, the initialization will be failed.
But it is better to show why the error is caused.
Signed-off-by: Masaki Muranaka <firstname.lastname@example.org>
Reviewed-by: Andrey Yurovsky <email@example.com>
Reviewed-by: Spencer Oliver <firstname.lastname@example.org>