vfs: do_last(): clean up error handling

Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

fs/namei.c

@@ -2634,21 +2634,14 @@ static struct file *do_last(struct nameidata *nd, struct path *path,
 	if (error)
 		goto exit_fput;
 opened:
-	if (!IS_ERR(filp)) {
 	error = ima_file_check(filp, op->acc_mode);
-		if (error) {
-			fput(filp);
-			filp = ERR_PTR(error);
-		}
-	}
-	if (!IS_ERR(filp)) {
+	if (error)
+		goto exit_fput;
+
 	if (will_truncate) {
 		error = handle_truncate(filp);
-			if (error) {
-				fput(filp);
-				filp = ERR_PTR(error);
-			}
-		}
+		if (error)
+			goto exit_fput;
 	}
 out:
 	if (want_write)