video: fbdev: sis: fix duplicated code for different branches

Refactor code in order to avoid identical code for different branches.

This issue was detected with the help of Coccinelle.

Addresses-Coverity-ID: 1226761
Signed-off-by: Gustavo A. R. Silva <[e-mail]>
Cc: Thomas Winischhofer <[e-mail]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[e-mail]>

drivers/video/fbdev/sis/init301.c

···
 	   if(SiS_Pr->SiS_VGAHDE >= 1280) {
               tempch = 20;
               tempbx &= ~0x20;
-           } else if(SiS_Pr->SiS_VGAHDE >= 1024) {
-              tempch = 25;
            } else {
 	      tempch = 25; /* OK */
 	   }
···
             }
          }
       } else {						/* ---- PAL ---- */
-         /* We don't play around with FSCI in PAL mode */
-         if(resindex == 0x04) {
-            SiS_SetCH70xxANDOR(SiS_Pr,0x20,0x00,0xEF);	/* loop filter off */
-            SiS_SetCH70xxANDOR(SiS_Pr,0x21,0x01,0xFE);	/* ACIV on */
-         } else {
-            SiS_SetCH70xxANDOR(SiS_Pr,0x20,0x00,0xEF);	/* loop filter off */
-            SiS_SetCH70xxANDOR(SiS_Pr,0x21,0x01,0xFE);	/* ACIV on */
-         }
+	/* We don't play around with FSCI in PAL mode */
+	SiS_SetCH70xxANDOR(SiS_Pr, 0x20, 0x00, 0xEF);	/* loop filter off */
+	SiS_SetCH70xxANDOR(SiS_Pr, 0x21, 0x01, 0xFE);	/* ACIV on */
       }
 
 #endif  /* 300 */
···
 	      delay = 0x0a;
 	   } else if(IS_SIS740) {
 	      delay = 0x00;
-	   } else if(SiS_Pr->ChipType < SIS_330) {
-	      delay = 0x0c;
 	   } else {
 	      delay = 0x0c;
 	   }