ASoC: sh: rz-ssi: Fix dereference of noderef expression warning

Fix following sparse warning:
sound/soc/sh/rz-ssi.c:156:15: sparse: warning: dereference of
noderef expression
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210816132049.28128-1-biju.das.jz@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rz-ssi.c

@@ -148,7 +148,7 @@ static u32 rz_ssi_reg_readl(struct rz_ssi_priv *priv, uint reg)
 	return readl(priv->base + reg);
 }
 
-static void rz_ssi_reg_mask_setl(struct rz_ssi_priv __iomem *priv, uint reg,
+static void rz_ssi_reg_mask_setl(struct rz_ssi_priv *priv, uint reg,
 				 u32 bclr, u32 bset)
 {
 	u32 val;