[S390] cio: memory leak in cio processing

Allocated kernel memory for locks is not freed in case of subchannel found
to be invalid.

Signed-off-by: Michael Ernst <mernst@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index f16c15c13f6e..11f632f9db58 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -577,8 +577,11 @@ cio_validate_subchannel (struct subchannel *sch, struct subchannel_id schid)
         }
 
         /* Initialization for io subchannels. */
-        if (!css_sch_is_valid(&sch->schib))
-                return -ENODEV;
+        if (!css_sch_is_valid(&sch->schib)) {
+                err = -ENODEV;
+                goto out;
+        }
+
         /* Devno is valid. */
         if (is_blacklisted (sch->schid.ssid, sch->schib.pmcw.dev)) {
                 /*