misc: cxl: clean up afu_read_config()

The sanity checks for overflow are not needed, because this is done on
caller side in fs/sysfs/file.c
Signed-off-by: NVladimir Zapolskiy <vz@mleia.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: NMichael Neuling <mikey@neuling.org>
Reviewed-by: NDaniel Axtens <dja@axtens.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/misc/cxl/sysfs.c

@@ -443,12 +443,7 @@ static ssize_t afu_read_config(struct file *filp, struct kobject *kobj,
 	struct afu_config_record *cr = to_cr(kobj);
 	struct cxl_afu *afu = to_cxl_afu(container_of(kobj->parent, struct device, kobj));
 
-	u64 i, j, val, size = afu->crs_len;
-
-	if (off > size)
-		return 0;
-	if (off + count > size)
-		count = size - off;
+	u64 i, j, val;
 
 	for (i = 0; i < count;) {
 		val = cxl_afu_cr_read64(afu, cr->cr, off & ~0x7);