usb: dwc3: remove a possible unnecessary 'out of memory' message

This patch removes a possible unnecessary out of memory message from
core.c as reported by checkpatch.pl:
   WARNING: Possible unnecessary 'out of memory' message
Signed-off-by: Kushagra Verma <kushagra765@outlook.com>
Link: https://lore.kernel.org/r/SI2PR01MB392926A7AFB821410770D7CFF8C19@SI2PR01MB3929.apcprd01.prod.exchangelabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc3/core.c

@@ -964,10 +964,8 @@ static void dwc3_set_incr_burst_type(struct dwc3 *dwc)
 		return;
 
 	vals = kcalloc(ntype, sizeof(u32), GFP_KERNEL);
-	if (!vals) {
-		dev_err(dev, "Error to get memory\n");
+	if (!vals)
 		return;
-	}
 
 	/* Get INCR burst type, and parse it */
 	ret = device_property_read_u32_array(dev,