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H A Dtee_ree_fs.c667b10f6f1b668c624a8d6f82cee63e27ec50803 Wed Jul 24 10:29:53 UTC 2019 Fangsuo Wu <fangsuowu@asrmicro.com> tee_ree_fs: create dirfile only when it's not found

Currently there's no check of return value of tee_fs_dirfile_open,
it's reasonable to do this when dir file truely doesn't exist.
However, if tee_fs_dirfile_open fails with other reason, calling
tee_fs_dirfile_open(true..) will overlap the old dir file, thus
file access in the future will fail.

Signed-off-by: Fangsuo Wu <fangsuowu@asrmicro.com>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>