i2c: nomadik: Fix the usage of wait_for_completion_timeout

The return value of wait_for_completion_timeout() is always
>= 0 with unsigned int type.

So the condition "ret < 0" or "ret >= 0" is pointless.
Signed-off-by: Nliu chuansheng <chuansheng.liu@intel.com>
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>

drivers/i2c/busses/i2c-nomadik.c

@@ -435,13 +435,6 @@ static int read_i2c(struct nmk_i2c_dev *dev, u16 flags)
 	timeout = wait_for_completion_timeout(
 		&dev->xfer_complete, dev->adap.timeout);
 
-	if (timeout < 0) {
-		dev_err(&dev->adev->dev,
-			"wait_for_completion_timeout "
-			"returned %d waiting for event\n", timeout);
-		status = timeout;
-	}
-
 	if (timeout == 0) {
 		/* Controller timed out */
 		dev_err(&dev->adev->dev, "read from slave 0x%x timed out\n",
@@ -523,13 +516,6 @@ static int write_i2c(struct nmk_i2c_dev *dev, u16 flags)
 	timeout = wait_for_completion_timeout(
 		&dev->xfer_complete, dev->adap.timeout);
 
-	if (timeout < 0) {
-		dev_err(&dev->adev->dev,
-			"wait_for_completion_timeout "
-			"returned %d waiting for event\n", timeout);
-		status = timeout;
-	}
-
 	if (timeout == 0) {
 		/* Controller timed out */
 		dev_err(&dev->adev->dev, "write to slave 0x%x timed out\n",