9p: Remove unnecessary variable for old fids while walking from d_parent

Remove the ofid variable that's local to the conditional block in favor
of the old_fid variable that's local to the entire function.

Link: https://lkml.kernel.org/r/20220527000003.355812-5-tyhicks@linux.microsoft.comSigned-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

fs/9p/fid.c

@@ -169,10 +169,10 @@ static struct p9_fid *v9fs_fid_lookup_with_uid(struct dentry *dentry,
 	fid = v9fs_fid_find(ds, uid, any);
 	if (fid) {
 		/* Found the parent fid do a lookup with that */
-		struct p9_fid *ofid = fid;
+		old_fid = fid;
 
-		fid = p9_client_walk(ofid, 1, &dentry->d_name.name, 1);
-		p9_client_clunk(ofid);
+		fid = p9_client_walk(old_fid, 1, &dentry->d_name.name, 1);
+		p9_client_clunk(old_fid);
 		goto fid_out;
 	}
 	up_read(&v9ses->rename_sem);