s390/net: Cocci spatch "ptr_ret.spatch"

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 83bc9c5..fd7b3bd 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -3348,7 +3348,7 @@
 	}
 	CLAW_DBF_TEXT(2, setup, "init_mod");
 	claw_root_dev = root_device_register("claw");
-	ret = IS_ERR(claw_root_dev) ? PTR_ERR(claw_root_dev) : 0;
+	ret = PTR_RET(claw_root_dev);
 	if (ret)
 		goto register_err;
 	ret = ccw_driver_register(&claw_ccw_driver);
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 676f120..70b3a02 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -1837,7 +1837,7 @@
 	if (ret)
 		goto out_err;
 	ctcm_root_dev = root_device_register("ctcm");
-	ret = IS_ERR(ctcm_root_dev) ? PTR_ERR(ctcm_root_dev) : 0;
+	ret = PTR_RET(ctcm_root_dev);
 	if (ret)
 		goto register_err;
 	ret = ccw_driver_register(&ctcm_ccw_driver);
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index c645dc9..f404f55 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -2441,7 +2441,7 @@
 	if (rc)
 		goto out_err;
 	lcs_root_dev = root_device_register("lcs");
-	rc = IS_ERR(lcs_root_dev) ? PTR_ERR(lcs_root_dev) : 0;
+	rc = PTR_RET(lcs_root_dev);
 	if (rc)
 		goto register_err;
 	rc = ccw_driver_register(&lcs_ccw_driver);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 6cd0fc1..70ce6b6 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -5705,7 +5705,7 @@
 	if (rc)
 		goto out_err;
 	qeth_core_root_dev = root_device_register("qeth");
-	rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0;
+	rc = PTR_RET(qeth_core_root_dev);
 	if (rc)
 		goto register_err;
 	qeth_core_header_cache = kmem_cache_create("qeth_hdr",