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

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

drivers/mmc/core/sdio_bus.c

@@ -272,8 +272,7 @@ static void sdio_release_func(struct device *dev)
 
 	sdio_free_func_cis(func);
 
-	if (func->info)
-		kfree(func->info);
+	kfree(func->info);
 
 	kfree(func);
 }