IB/uverbs: Release lock on error path

If ibdev->alloc_ucontext() fails then ib_uverbs_get_context() does not
unlock file->mutex before returning error.

Signed-off by: Ganapathi CH <cganapathi@novell.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 9f69bd48eb1b..4266d2e5eba4 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -80,8 +80,10 @@ ssize_t ib_uverbs_get_context(struct ib_uverbs_file *file,
                    in_len - sizeof cmd, out_len - sizeof resp);
 
         ucontext = ibdev->alloc_ucontext(ibdev, &udata);
-        if (IS_ERR(ucontext))
-                return PTR_ERR(file->ucontext);
+        if (IS_ERR(ucontext)) {
+                ret = PTR_ERR(file->ucontext);
+                goto err;
+        }
 
         ucontext->device = ibdev;
         INIT_LIST_HEAD(&ucontext->pd_list);