fs/ntfs3: Unlock on error in attr_insert_range()

This error path needs to call up_write(&ni->file.run_lock) and do some
other clean up before returning.

Fixes: aa30eccb

 ("fs/ntfs3: Fallocate (FALLOC_FL_INSERT_RANGE) implementation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>