mtd: mxc-nand: no need to check for validity of platform driver data

The probe function calls platform_set_drvdata with a valid pointer when
the probe is successful.  As mxcnd_suspend and mxcnd_resume are only
called on bound devices, platform_get_drvdata always returns non-NULL.

This fix isn't critical as the pointer is always valid so it doesn't
matter if the compiler generated code for it or not.
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reported-by: NDavid Binderman <dcb314@hotmail.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>

drivers/mtd/nand/mxc_nand.c

@@ -886,11 +886,10 @@ static int mxcnd_suspend(struct platform_device *pdev, pm_message_t state)
 	int ret = 0;
 
 	DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND suspend\n");
-	if (mtd) {
-		ret = mtd->suspend(mtd);
-		/* Disable the NFC clock */
-		clk_disable(host->clk);
-	}
+
+	ret = mtd->suspend(mtd);
+	/* Disable the NFC clock */
+	clk_disable(host->clk);
 
 	return ret;
 }
@@ -904,11 +903,9 @@ static int mxcnd_resume(struct platform_device *pdev)
 
 	DEBUG(MTD_DEBUG_LEVEL0, "MXC_ND : NAND resume\n");
 
-	if (mtd) {
-		/* Enable the NFC clock */
-		clk_enable(host->clk);
-		mtd->resume(mtd);
-	}
+	/* Enable the NFC clock */
+	clk_enable(host->clk);
+	mtd->resume(mtd);
 
 	return ret;
 }