mtd: nand: begin restructuring check_create

We will begin restructuring the code for check_create so that we can
make some important changes. For now, we should just begin to get rid of
some goto statements to make things cleaner. This is the first step of a
few, which are separated to make them easier to follow.

This step should just be a code refactor.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>

drivers/mtd/nand/nand_bbt.c

@@ -898,30 +898,19 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
 			if (td->pages[i] == -1 && md->pages[i] == -1) {
 				writeops = 0x03;
 				goto create;
-			}
-
-			if (td->pages[i] == -1) {
+			} else if (td->pages[i] == -1) {
 				rd = md;
 				td->version[i] = md->version[i];
 				writeops = 0x01;
-				goto writecheck;
-			}
-
-			if (md->pages[i] == -1) {
+			} else if (md->pages[i] == -1) {
 				rd = td;
 				md->version[i] = td->version[i];
 				writeops = 0x02;
-				goto writecheck;
-			}
-
-			if (td->version[i] == md->version[i]) {
+			} else if (td->version[i] == md->version[i]) {
 				rd = td;
 				if (!(td->options & NAND_BBT_VERSION))
 					rd2 = md;
-				goto writecheck;
-			}
-
-			if (((int8_t)(td->version[i] - md->version[i])) > 0) {
+			} else if (((int8_t)(td->version[i] - md->version[i])) > 0) {
 				rd = td;
 				md->version[i] = td->version[i];
 				writeops = 0x02;
@@ -930,17 +919,14 @@ static int check_create(struct mtd_info *mtd, uint8_t *buf, struct nand_bbt_desc
 				td->version[i] = md->version[i];
 				writeops = 0x01;
 			}
-
-			goto writecheck;
-
 		} else {
 			if (td->pages[i] == -1) {
 				writeops = 0x01;
 				goto create;
 			}
 			rd = td;
-			goto writecheck;
 		}
+		goto writecheck;
 	create:
 		/* Create the bad block table by scanning the device? */
 		if (!(td->options & NAND_BBT_CREATE))