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");
+		dev_err(dev, "resume: invalid card or adapter\n");
 		return 0;
 	}
 
@@ -272,12 +267,11 @@ 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"
+		dev_err(dev, "%s: cannot remain alive while host is"
 			" suspended\n", sdio_func_id(func));
 		return -ENOSYS;
 	}
@@ -287,10 +281,6 @@ static int mwifiex_sdio_suspend(struct device *dev)
 		dev_err(dev, "suspend: invalid card\n");
 		return 0;
 	}
-	} else {
-		pr_err("suspend: sdio_func is not specified\n");
-		return 0;
-	}
 
 	/* Might still be loading firmware */
 	wait_for_completion(&card->fw_done);