usb: gadget: configfs: Fix missing spin_lock_init()

commit 093edc2baad2c258b1f55d1ab9c63c2b5ae67e42 upstream.

The driver allocates the spinlock but not initialize it.
Use spin_lock_init() on it to initialize it correctly.

This is detected by Coccinelle semantic patch.

Change-Id: Ibac3a73de582ea97c54d97d9d6104ee027cb446f
Fixes: 1a1c851bbd70 ("usb: gadget: configfs: fix concurrent issue between composite APIs")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Cc: stable <stable@vger.kernel.org>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20191030034046.188808-1-weiyongjun1@huawei.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: f777dd5b
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git


Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>