Driver core: Fix cleanup in device_create_vargs().
If device_register() in device_create_vargs() fails, the device must be cleaned up with put_device() (which is also fine on NULL) instead of kfree(). Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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