soundwire: increase group->max_size after allocation

Only update `group->max_size` after both allocations succeed to avoid
leaving the group's state inconsistent if one allocation fails.

Signed-off-by: Baoli.Zhang <baoli.zhang@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260506055039.3751028-3-baoli.zhang@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Baoli.Zhang

drivers/soundwire/generic_bandwidth_allocation.c

@@ -308,22 +308,23 @@ static int sdw_add_element_group_count(struct sdw_group *group,
 		unsigned int *rates;
 		unsigned int *lanes;
 
-		group->max_size += 1;
 		rates = krealloc(group->rates,
-				 (sizeof(int) * group->max_size),
+				 sizeof(int) * (group->max_size + 1),
 				 GFP_KERNEL);
 		if (!rates)
 			return -ENOMEM;
 
 		group->rates = rates;
 
 		lanes = krealloc(group->lanes,
-				 (sizeof(int) * group->max_size),
+				 sizeof(int) * (group->max_size + 1),
 				 GFP_KERNEL);
 		if (!lanes)
 			return -ENOMEM;
 
 		group->lanes = lanes;
+
+		group->max_size += 1;
 	}
 
 	group->rates[group->count] = rate;