[S390] tty: PTR_ERR return of wrong pointer in fs3270_open()

Return the PTR_ERR of the correct pointer.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 28e4649..247b2b9 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -467,7 +467,7 @@
 	if (IS_ERR(ib)) {
 		raw3270_put_view(&fp->view);
 		raw3270_del_view(&fp->view);
-		rc = PTR_ERR(fp);
+		rc = PTR_ERR(ib);
 		goto out;
 	}
 	fp->rdbuf = ib;