mmc: matsushita-common: Add missing else

Fix minor rebase omission, the else was missing which triggered
two accesses to the register on 64bit variant of the IP.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

drivers/mmc/matsushita-common.c

@@ -66,7 +66,7 @@ void matsu_sd_writel(struct matsu_sd_priv *priv,
 {
 	if (priv->caps & MATSU_SD_CAP_64BIT)
 		writel(val, priv->regbase + (reg << 1));
-	if (priv->caps & MATSU_SD_CAP_16BIT) {
+	else if (priv->caps & MATSU_SD_CAP_16BIT) {
 		writew(val & 0xffff, priv->regbase + (reg >> 1));
 		if (reg == MATSU_SD_INFO1 || reg == MATSU_SD_INFO1_MASK ||
 		    reg == MATSU_SD_INFO2 || reg == MATSU_SD_INFO2_MASK ||