Simplify some code

app/models/user.rb

@@ -31,7 +31,7 @@ class User < ApplicationRecord
   def self.find_for_france_connect(email, siret)
     user = User.find_by(email: email)
     if user.nil?
-      return User.create(email: email, password: Devise.friendly_token[0, 20], siret: siret)
+      User.create(email: email, password: Devise.friendly_token[0, 20], siret: siret)
     else
       user.update(siret: siret)
       user

app/services/clamav_service.rb

@@ -9,10 +9,6 @@ class ClamavService
     client = ClamAV::Client.new
     response = client.execute(ClamAV::Commands::ScanCommand.new(file_path))
 
-    if response.first.class == ClamAV::VirusResponse
-      return false
-    end
-
-    true
+    response.first.class != ClamAV::VirusResponse
   end
 end