ANDROID: dm-user: Drop additional reference

kref_init already takes one reference during
initialization. Additional reference will cause
memory leak when dm-user target is destroyed.

Bug: 188362111
Test: OTA - verify ref count dropping to 0
Signed-off-by: Akilesh Kailash <akailash@google.com>
Change-Id: I0b25135371daefdaf2841e9ff5cdfd6aaa389f3b

drivers/md/dm-user.c

@@ -916,7 +916,6 @@ static int user_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 	 * channels have been closed.
 	 */
 	kref_init(&t->references);
-	kref_get(&t->references);
 
 	mutex_init(&t->lock);
 	init_waitqueue_head(&t->wq);