mmc: bcm: fix uninitialized pointer deref on probe

Commit 3d296365e4e8 ("mmc: sdhci: Add support for
sdhci-caps-mask") sdhci_setup_cfg() expects a valid sdhci_host mmc
field.

Fixes: 3d296365e4e8 ("mmc: sdhci: Add support for sdhci-caps-mask")
Cc: Faiz Abbas <faiz_abbas@ti.com>
Cc: Matthias Brugger <mbrugger@suse.com>
Cc: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/drivers/mmc/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c
index 08bddd4..bf3304c 100644
--- a/drivers/mmc/bcm2835_sdhci.c
+++ b/drivers/mmc/bcm2835_sdhci.c
@@ -214,6 +214,9 @@
 	host->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
 	host->ops = &bcm2835_ops;
 
+	host->mmc = &plat->mmc;
+	host->mmc->dev = dev;
+
 	ret = sdhci_setup_cfg(&plat->cfg, host, emmc_freq, MIN_FREQ);
 	if (ret) {
 		debug("%s: Failed to setup SDHCI (err=%d)\n", __func__, ret);
@@ -221,7 +224,6 @@
 	}
 
 	upriv->mmc = &plat->mmc;
-	host->mmc = &plat->mmc;
 	host->mmc->priv = host;
 
 	return sdhci_probe(dev);