OpenSM/osm_subnet.c: Convert log_max_size to MB

Fixes commit 9954ead20c84586c6daaec5a1fba835eda0b4738
which should preceed commit 12b0e65b2dd198c1764ffb23dd8d6572f0fac5e6

Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>

diff --git a/opensm/opensm/osm_subnet.c b/opensm/opensm/osm_subnet.c
index 750bdc6..5447e95 100644
--- a/opensm/opensm/osm_subnet.c
+++ b/opensm/opensm/osm_subnet.c
@@ -1278,7 +1278,7 @@ int osm_subn_parse_conf_file(char *file_name, osm_subn_opt_t * const p_opts)
 		opts_unpack_uint32("log_max_size",
 				   p_key, p_val,
 				   (void *) & p_opts->log_max_size);
-		p_opts->log_max_size * 1024 *1024; /* convert to MB */
+		p_opts->log_max_size *= 1024 * 1024; /* convert to MB */
 
 		opts_unpack_charp("partition_config_file",
 				  p_key, p_val, &p_opts->partition_config_file);
