USB: f_mass_storage: fix crash on bind() error

init_completion() hasn't been called yet and the thread isn't created
if we end up here, so don't call complete() on thread_notifier.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c
index 0553d9a..e6abde3 100644
--- a/drivers/usb/gadget/f_mass_storage.c
+++ b/drivers/usb/gadget/f_mass_storage.c
@@ -2865,7 +2865,6 @@
 	/* Call fsg_common_release() directly, ref might be not
 	 * initialised */
 	fsg_common_release(&common->ref);
-	complete(&common->thread_notifier);
 	return ERR_PTR(rc);
 }