usb: gadget: set composite to NULL when usb_gadget_register_driver fails
So that it can be tried later again.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 073fb20 commit d465cb7a721eb07c8efb460212697809502ad1e3
@Sascha Hauer Sascha Hauer authored on 7 Feb 2014
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drivers/usb/gadget/composite.c