LU-1812 mgs: assign PTR_ERR() to prevent warnings

Some newer kernels fail with the "error: ignoring return value of
'PTR_ERR', declared with attribute warn_unused_result".

Signed-off-by: chas williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Change-Id: I94ff7d8371e2daf7440dd5fb295c209ed671bc74
Reviewed-on: http://review.whamcloud.com/4971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Peng Tao <bergwolf@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>

diff --git a/lustre/mgs/mgs_fs.c b/lustre/mgs/mgs_fs.c
index 231b6af..e621bf0 100644 (file)
--- a/lustre/mgs/mgs_fs.c
+++ b/lustre/mgs/mgs_fs.c
@@ -143,7 +143,7 @@ int mgs_fs_setup(const struct lu_env *env, struct mgs_device *mgs)
        root = dt_locate_at(env, mgs->mgs_bottom, &rfid,
                            &mgs->mgs_dt_dev.dd_lu_dev);
        if (unlikely(IS_ERR(root)))
        root = dt_locate_at(env, mgs->mgs_bottom, &rfid,
                            &mgs->mgs_dt_dev.dd_lu_dev);
        if (unlikely(IS_ERR(root)))

-               GOTO(out_los, PTR_ERR(root));
+               GOTO(out_los, rc = PTR_ERR(root));

 
        o = local_file_find_or_create(env, mgs->mgs_los, root,
                                      MOUNT_CONFIGS_DIR,
 
        o = local_file_find_or_create(env, mgs->mgs_los, root,
                                      MOUNT_CONFIGS_DIR,