sandbox: p2sb: Silence compiler warning

Some compilers produce a warning about 'child' being used before init.
Silence this by setting to NULL at the start.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/misc/p2sb_emul.c b/drivers/misc/p2sb_emul.c
index a6ee9a235e3b0a46ca6b4cebb55a6dc7013163fd..02f7a7ea67579fcfd71322b0f595535867ba37c7 100644 (file)
--- a/drivers/misc/p2sb_emul.c
+++ b/drivers/misc/p2sb_emul.c
@@ -215,7 +215,7 @@ static int sandbox_p2sb_emul_map_physmem(struct udevice *dev,
                                         void **ptrp)
 {
        struct p2sb_emul_priv *priv = dev_get_priv(dev);
-       struct udevice *child;
+       struct udevice *child = NULL;  /* Silence compiler warning */
        unsigned int offset;
        int barnum;
        int ret;