ceph: remove unnecessary IS_ERR() check in ceph_fname_to_usr()

Before returning, function ceph_fname_to_usr() does a final IS_ERR() check
in 'dir':

	if ((dir != fname->dir) && !IS_ERR(dir)) {...}

This check is unnecessary because, if the 'dir' variable has changed to
something other than 'fname->dir' (it's initial value), that error check has
been performed already and, if there was indeed an error, it would have
been returned immediately.

Besides, this useless IS_ERR() is also confusing static analysis tools.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202309282202.xZxGdvS3-lkp@intel.com/
Signed-off-by: Luis Henriques <lhenriques@suse.de>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/crypto.c b/fs/ceph/crypto.c
index e1f31b8..5b5112c 100644 (file)
--- a/fs/ceph/crypto.c
+++ b/fs/ceph/crypto.c
@@ -460,7 +460,7 @@ int ceph_fname_to_usr(const struct ceph_fname *fname, struct fscrypt_str *tname,
 out:
        fscrypt_fname_free_buffer(&_tname);
 out_inode:
-       if ((dir != fname->dir) && !IS_ERR(dir)) {
+       if (dir != fname->dir) {
                if ((dir->i_state & I_NEW))
                        discard_new_inode(dir);
                else