ovl: remove unneeded semicolon

Remove unnecessary semicolons reported by Coccinelle/coccicheck and the
semantic patch at scripts/coccinelle/misc/semicolon.cocci.

Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Fixed: 7ab96df ("VFS/nfsd/cachefiles/ovl: add start_creating() and end_creating()")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>

Author: Chen Ni

fs/overlayfs/dir.c

@@ -105,7 +105,7 @@ static struct dentry *ovl_whiteout(struct ovl_fs *ofs)
 			whiteout = dget(link);
 		end_creating(link);
 		if (!err)
-			return whiteout;;
+			return whiteout;
 
 		if (err != -EMLINK) {
 			pr_warn("Failed to link whiteout - disabling whiteout inode sharing(nlink=%u, err=%u)\n",