IB/uverbs: Make ib_uverbs_release_event_file() static

ib_uverbs_release_event_file() is only used in uverbs_main.c, so make it
static to that file.  Also move the definition before the first use, so
a forward declaration is not needed.
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/core/uverbs.h

@@ -148,7 +148,6 @@ void idr_remove_uobj(struct idr *idp, struct ib_uobject *uobj);
 
 struct file *ib_uverbs_alloc_event_file(struct ib_uverbs_file *uverbs_file,
 					int is_async, int *fd);
-void ib_uverbs_release_event_file(struct kref *ref);
 struct ib_uverbs_event_file *ib_uverbs_lookup_comp_file(int fd);
 
 void ib_uverbs_release_ucq(struct ib_uverbs_file *file,

drivers/infiniband/core/uverbs_main.c

@@ -125,6 +125,14 @@ static void ib_uverbs_release_dev(struct kref *ref)
 	complete(&dev->comp);
 }
 
+static void ib_uverbs_release_event_file(struct kref *ref)
+{
+	struct ib_uverbs_event_file *file =
+		container_of(ref, struct ib_uverbs_event_file, ref);
+
+	kfree(file);
+}
+
 void ib_uverbs_release_ucq(struct ib_uverbs_file *file,
 			  struct ib_uverbs_event_file *ev_file,
 			  struct ib_ucq_object *uobj)
@@ -331,14 +339,6 @@ static unsigned int ib_uverbs_event_poll(struct file *filp,
 	return pollflags;
 }
 
-void ib_uverbs_release_event_file(struct kref *ref)
-{
-	struct ib_uverbs_event_file *file =
-		container_of(ref, struct ib_uverbs_event_file, ref);
-
-	kfree(file);
-}
-
 static int ib_uverbs_event_fasync(int fd, struct file *filp, int on)
 {
 	struct ib_uverbs_event_file *file = filp->private_data;