USB: core: drop OOM message

Drop redundant OOM message on allocation failures which would already
have been logged by the allocator. This also allows us to clean up the
error paths somewhat.

Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191008090240.30376-1-johan@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>