"fastboot reboot bootloader" fails to transmit OKAY back to the host

When running fastboot reboot bootloder, fastboot fails to kick of the
USB transmit of OKAY back to the host. Rearranged the code to match that of
cb_reboot, where it performs the reset in the completion routine.

Bug: 74613660
Test: Ran "fastboot reboot bootloader" and no longer see the FAILED message.
Change-Id: I827a4e5b9f478da2343486f46710e959a5fc22a1
1 file changed