cifs: Fix comment as d_alloc_root() is replaced by d_make_root()

For more details see <file: Documentation/filesystems/porting>.
Signed-off-by: NSedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>

fs/cifs/cifsfs.c

@@ -124,7 +124,7 @@ cifs_read_super(struct super_block *sb)
 		goto out_no_root;
 	}
 
-	/* do that *after* d_alloc_root() - we want NULL ->d_op for root here */
+	/* do that *after* d_make_root() - we want NULL ->d_op for root here */
 	if (cifs_sb_master_tcon(cifs_sb)->nocase)
 		sb->s_d_op = &cifs_ci_dentry_ops;
 	else