soc/qman: Check ioremap return value

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Signed-off-by: Scott Wood <oss@buserror.net>

diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c
index 0cace9e0077e0c685b0c74bd0da57389d2d037e7..f4e6e70de259918c4d154698919b81698dff4bc7 100644 (file)
--- a/drivers/soc/fsl/qbman/qman_ccsr.c
+++ b/drivers/soc/fsl/qbman/qman_ccsr.c
@@ -444,6 +444,9 @@ static int zero_priv_mem(struct device *dev, struct device_node *node,
        /* map as cacheable, non-guarded */
        void __iomem *tmpp = ioremap_prot(addr, sz, 0);
 
+       if (!tmpp)
+               return -ENOMEM;
+
        memset_io(tmpp, 0, sz);
        flush_dcache_range((unsigned long)tmpp,
                           (unsigned long)tmpp + sz);