commit 6899b4f7c99c72968e58e502f96084f74f6e5e86 upstream.

Fix null pointer issue if resource_size is called with no ioresource.
Signed-off-by: NLudovic Barre <ludovic.barre@st.com>
Signed-off-by: NFabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: NJassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>