mmc: Remove redundant null check before kfree in bus.c

kfree on a null pointer is a no-op.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

drivers/mmc/core/bus.c

@@ -225,8 +225,7 @@ static void mmc_release_card(struct device *dev)
 
 	sdio_free_common_cis(card);
 
-	if (card->info)
-		kfree(card->info);
+	kfree(card->info);
 
 	kfree(card);
 }