file_zbc: Fixed write error checking
file_zbc: Fixed write error checking

Fix the order of write command checks to ensure that write errors report the
correct asc/ascq. In particular, always check for full zones first.

Signed-off-by: Masato Suzuki <4223c86b58d33df598c0464c24eb7e4163546ad7@wdc.com>

open-iscsi/tcmu-runner,agrover/tcmu-runner,open-iscsi/tcmu-runner