fat: FAT filesystem premature release of info struct.

File was found on specified location. Info about file was read,
but then immediately destroyed using 'free' call. As a result
file size was set to 0, hence fat process didn't read any data.

Premature 'free' call removed. Resources are freed right before
function return. File is read correctly.
Signed-off-by: NMartin Vystrcil <martin.vystrcil@m-linux.cz>

fs/fat/fat.c

@@ -1174,10 +1174,6 @@ int file_fat_read_at(const char *filename, loff_t pos, void *buffer,
 	/* For saving default max clustersize memory allocated to malloc pool */
 	dir_entry *dentptr = itr->dent;
 
-	free(itr);
-
-	itr = NULL;
-
 	ret = get_contents(&fsdata, dentptr, pos, buffer, maxsize, actread);
 
 out_free_both: