staging: rtl8192e: Remove check if channel_array[channel_plan].len != 0

channel_plan is constant COUNTRY_CODE_WORLD_WIDE_13. Remove equation to
check length of array as it is always not 0.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/0cfcc32a06033908c469ef0273de2485dbfd6b82.1700296319.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/dot11d.c

@@ -55,13 +55,11 @@ void dot11d_channel_map(u8 channel_plan, struct rtllib_device *ieee)
 
 	ieee->global_domain = false;
 
-	if (channel_array[channel_plan].len != 0) {
-		memset(GET_DOT11D_INFO(ieee)->channel_map, 0,
-		       sizeof(GET_DOT11D_INFO(ieee)->channel_map));
-		for (i = 0; i < channel_array[channel_plan].len; i++) {
-			GET_DOT11D_INFO(ieee)->channel_map[channel_array
-					[channel_plan].channel[i]] = 1;
-		}
+	memset(GET_DOT11D_INFO(ieee)->channel_map, 0,
+	       sizeof(GET_DOT11D_INFO(ieee)->channel_map));
+	for (i = 0; i < channel_array[channel_plan].len; i++) {
+		GET_DOT11D_INFO(ieee)->channel_map[channel_array
+				[channel_plan].channel[i]] = 1;
 	}
 
 	switch (channel_plan) {