mwifiex: sdio: don't check for NULL sdio_func

sdio_func is retrieved via container_of() and should never be NULL.
Checking for NULL just makes the logic more confusing than necessary.
Stop doing that.
Signed-off-by: Brian Norris <briannorris@chromium.org>
Tested-by: Xinming Hu <huxm@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/mwifiex/sdio.c

@@ -188,15 +188,10 @@ static int mwifiex_sdio_resume(struct device *dev)
 	struct mwifiex_adapter *adapter;
 	mmc_pm_flag_t pm_flag = 0;
 
-	if (func) {
-		pm_flag = sdio_get_host_pm_caps(func);
-		card = sdio_get_drvdata(func);
-		if (!card || !card->adapter) {
-			pr_err("resume: invalid card or adapter\n");
-			return 0;
-		}
-	} else {
-		pr_err("resume: sdio_func is not specified\n");
+	pm_flag = sdio_get_host_pm_caps(func);
+	card = sdio_get_drvdata(func);
+	if (!card || !card->adapter) {
+		dev_err(dev, "resume: invalid card or adapter\n");
 		return 0;
 	}
 
@@ -272,23 +267,18 @@ static int mwifiex_sdio_suspend(struct device *dev)
 	mmc_pm_flag_t pm_flag = 0;
 	int ret = 0;
 
-	if (func) {
-		pm_flag = sdio_get_host_pm_caps(func);
-		pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
-			 sdio_func_id(func), pm_flag);
-		if (!(pm_flag & MMC_PM_KEEP_POWER)) {
-			pr_err("%s: cannot remain alive while host is"
-				" suspended\n", sdio_func_id(func));
-			return -ENOSYS;
-		}
+	pm_flag = sdio_get_host_pm_caps(func);
+	pr_debug("cmd: %s: suspend: PM flag = 0x%x\n",
+		 sdio_func_id(func), pm_flag);
+	if (!(pm_flag & MMC_PM_KEEP_POWER)) {
+		dev_err(dev, "%s: cannot remain alive while host is"
+			" suspended\n", sdio_func_id(func));
+		return -ENOSYS;
+	}
 
-		card = sdio_get_drvdata(func);
-		if (!card) {
-			dev_err(dev, "suspend: invalid card\n");
-			return 0;
-		}
-	} else {
-		pr_err("suspend: sdio_func is not specified\n");
+	card = sdio_get_drvdata(func);
+	if (!card) {
+		dev_err(dev, "suspend: invalid card\n");
 		return 0;
 	}