fs: Drop unlikely before IS_ERR(_OR_NULL)

IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
is no need to do that again from its callers. Drop it.

Signed-off-by: Viresh Kumar <[email protected]>
Reviewed-by: Jeff Layton <[email protected]>
Reviewed-by: David Howells <[email protected]>
Reviewed-by: Steve French <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
8 files changed